So, in all that you wrote, you didn't say anything about God and how He figures into your life. Why is that? As a Christian, a disciple of Jesus Christ, I'd give you spiritual advice because it is the best, the deepest, and the most lasting sort of advice I could give you. But if God isn't your heavenly Father, if you haven't trusted in Jesus as your Savior from your sin, and submitted yourself to him as your Lord and God, then the spiritual advice I would give you isn't going to be of any value to you. In order to really understand such advice, you have to be made "alive" spiritually which only happens when you've become a child of God, a Christian.
Being a Christian isn't something that happens because you go to church, or know a priest or pastor, or own a Bible. Standing in a car-repair shop, or knowing the mechanic, or owning a few tools doesn't make you a car mechanic, right? Oddly, a lot of people think that being a Christian is about a location (church), and knowing a religious person (priest), and doing religious things (praying, communion, tithing, etc.), but in reality the Bible says that being a Christian is knowing a Person (God), it's being related to Him as one of His adopted children.
Revelation 3:20
20 Behold, I stand at the door and knock. If anyone hears my voice and opens the door, I will come in to him and eat with him, and he with me.
1 John 5:11-12
11 And this is the testimony, that God gave us eternal life, and this life is in his Son.
12 Whoever has the Son has life; whoever does not have the Son of God does not have life.
John 14:6
6 Jesus said to him, “I am the way, and the truth, and the life. No one comes to the Father except through me.
This adoption happens as a result of trusting that Jesus is God, that he died in payment of your sin-debt, that he rose from the dead and ascended to heaven where he sits at God's right hand as your Advocate with God, that you are the terrible sinner He says you are and that you need desperately to be saved from yourself and from God's just wrath that your sin deserves. Is this you? Do you believe these things and live in them as Truth every day?
Romans 3:10
10 as it is written: “None is righteous, no, not one;
Romans 3:23
23 for all have sinned and fall short of the glory of God,
1 John 1:9-10
9 If we confess our sins, he is faithful and just to forgive us our sins and to cleanse us from all unrighteousness.
10 If we say we have not sinned, we make him a liar, and his word is not in us.
John 3:16-19
16 “For God so loved the world, that he gave his only Son, that whoever believes in him should not perish but have eternal life.
17 For God did not send his Son into the world to condemn the world, but in order that the world might be saved through him.
18 Whoever believes in him is not condemned, but whoever does not believe is condemned already, because he has not believed in the name of the only Son of God.
19 And this is the judgment: the light has come into the world, and people loved the darkness rather than the light because their works were evil.
Romans 10:9-10
9 because, if you confess with your mouth that Jesus is Lord and believe in your heart that God raised him from the dead, you will be saved.
10 For with the heart one believes and is justified, and with the mouth one confesses and is saved.
When you become a child of God through trusting in Jesus as your Savior and Lord and giving your life over to him to rule as he sees fit, a whole realm of spiritual living opens up to you. This is because the Holy Spirit of God, in response to your trust in Christ, has come to dwell within you. He gives to you in himself "new life," a spiritual life you didn't have before, that enables you to understand spiritual truth.
Titus 3:5-6
5 he saved us, not because of works done by us in righteousness, but according to his own mercy, by the washing of regeneration and renewal of the Holy Spirit,
6 whom he poured out on us richly through Jesus Christ our Savior,
1 John 4:13
13 By this we know that we abide in him and he in us, because he has given us of his Spirit.
John 14:16-17
16 And I will ask the Father, and he will give you another Helper, to be with you forever,
17 even the Spirit of truth, whom the world cannot receive, because it neither sees him nor knows him. You know him, for he dwells with you and will be in you.
Because the Holy Spirit is inside of you, giving to you new, spiritual life in himself, you can understand the "things of God" in a way that is impossible without the Holy Spirit. And so, I ask you if you're a "born-again" child of God, a person in whom the Holy Spirit is dwelling. Are you? If you are, I can offer to you God's advice to all of His children about how to navigate life and its various difficulties, tragedies and suffering with unshakable joy, peace and contentment. If you aren't God's child yet, then my first bit of advice would be to remedy this condition immediately and begin to live with God in the way He created you to do, which is in daily, life-changing communion with Himself.
Proverbs 3:5-8
5 Trust in the LORD with all your heart, and do not lean on your own understanding.
6 In all your ways acknowledge him, and he will make straight your paths.
7 Be not wise in your own eyes; fear the LORD, and turn away from evil.
8 It will be healing to your flesh and refreshment to your bones.