It sounds like you may have a lot on your plate and maybe it's been that way for a while. I know what that feels like and it does make you just want to escape and/or shut down. You do need to make sure you're giving yourself enough breathing room and not trying to take on the world. Don't expect perfection from yourself, that will lead to being overwhelmed and burned out faster than anything. Give yourself room to make mistakes and to say "no" to something if it's just too much. It's better to say "no" to someone now than to flake off or stand them up.

You can't run from your responsibilities. They will find you and usually when they do they've become big problems. I know - personal experience here. What you need is a support system for yourself. You can't support the people who depend on you if you're not strong. So hanging with friends a bit is ok, but make sure the time is spent with people who can be encouraging to you and supportive when you need them to be. If the ones you have now can't do that and just want to party, you need to expand your circle and find someone who can. Maybe even an older adult, advisor, teacher, aunt or uncle, etc whom you can call on. Just ask. You'd be surprised how willing people are to help.

You're happy where you're at because you're comfortable. You're okay...for now...because nothing has come up to challenge you...yet. Trust me, if you don't challenge yourself - life will and when life does it it's usually not pleasant. LIFE IS CHANGE. Things will not stay the same way they are now forever. Sooner or later something will come along and pull the rug out from under you, whether you like it or not. Why change? So you can grow as a person and improve your life.