Hey All,
Josh2010, you sound fairly young. I am guessing somewhere in your teens; am I right? That is usually the time parents and children have conflicts.
What makes your mom think that? Ask her directly. Listen to what she says. Don't get defensive and start making excuses. She is your mom and loves you. Maybe your actions do not match your words in her eyes. You may be doing something, unaware, that it is hurting both her and your witness.
After she has her say, don't get mad or defensive. Hug her and tell her you love her. Thank her for being honest with you. Apologize for your behavior.
Then make changes where you can. (I doubt she is asking you to give up your salvation.) Maybe its that you are neglecting your chores. Start doing them. Do them without being asked. Do them with joy in your heart. It will take time but she will notice the change. That change becomes part of your witness.