When your feeling a little unstable mentally.... I need help

I had a friend tell me to hold onto my faith because a lot of people in the world would be sad to see me go.... my issue is that everything i do is for everyone else and that’s where I’m running into my problem. I’m exhausted, I’ve ran away and come back again. I just want to quit, I don’t have a goal or an idea of my future because I’ve never really planned on having one. Every time I think I’ve found the future in someone they let me down. I’m so ready to quit. I lost my job and my car broke the same day and every interview I go on I never get a call back. My mom does drugs and of course I was stuck in a position where I had to move back home. I’m ready to leave foreverrrrrr