Let Jesus help you here. Consider Matthew, chapter 6, starting at verse 25 and read to the end of the chapter. Here's what He says.
“But of that day and hour no one knows, not even the angels of heaven, but My Father only. But as the days of Noah were, so also will the coming of the Son of Man be. For as in the days before the flood, they were eating and drinking, marrying and giving in marriage, until the day that Noah entered the ark, and did not know until the flood came and took them all away, so also will the coming of the Son of Man be. Then two men will be in the field: one will be taken and the other left. Two women will be grinding at the mill: one will be taken and the other left. Watch therefore, for you do not know what hour your Lord is coming. But know this, that if the master of the house had known what hour the thief would come, he would have watched and not allowed his house to be broken into. Therefore you also be ready, for the Son of Man is coming at an hour you do not expect."
Matthew 24:36-44 NKJV
What Jesus is saying is that we must always guard our hearts and our minds and to follow Him, living our lives according to His commands because we never know when our last moment is going to be. My life could end before I take my next breath or it may not.
Do you worry every time you get into an automobile that you may crash? Do you worry every time you ride your bicycle that you may crash? Do you worry that you might trip and fall and get hurt just walking? Jesus says not to worry.
"I say to you, do not worry about your life, what you will eat or what you will drink; nor about your body, what you will put on. Is not life more than food and the body more than clothing? Look at the birds of the air, for they neither sow nor reap nor gather into barns; yet your heavenly Father feeds them. Are you not of more value than they? Which of you by worrying can add one cubit to his stature? “So why do you worry about clothing? Consider the lilies of the field, how they grow: they neither toil nor spin; and yet I say to you that even Solomon in all his glory was not arrayed like one of these. Now if God so clothes the grass of the field, which today is, and tomorrow is thrown into the oven, will He not much more clothe you, O you of little faith? “Therefore do not worry, saying, ‘What shall we eat?’ or ‘What shall we drink?’ or ‘What shall we wear?’ For after all these things the Gentiles seek. For your heavenly Father knows that you need all these things. But seek first the kingdom of God and His righteousness, and all these things shall be added to you. Therefore do not worry about tomorrow, for tomorrow will worry about its own things. Sufficient for the day is its own trouble.
Always remember that Jesus is always with you, no matter what happens. That is a promise.
"Lo, I am with you always, even to the end of the age.” Matthew 28:20 NKJV
"Where two or three are gathered together in My name, I am there in the midst of them.” Matthew 18:20 NKJV
“If you love Me, keep My commandments. And I will pray the Father, and He will give you another Helper, that He may abide with you forever— the Spirit of truth, whom the world cannot receive, because it neither sees Him nor knows Him; but you know Him, for He dwells with you and will be in you. I will not leave you orphans; I will come to you."
John 14:15-18 NKJV