Krob,
It's not petty to have concerns about your life. In fact it's the opposite. Keep your focus on being healthy and your goals in life. You are still very young and have realized that your alcohol use can't continue. If you have problems now they will only get worse as time goes on as all on this site can attest to. Keep sober and use every tool you have at your disposal to stay that way. There is a bunch of resources and supportive people here to help you. Also it might be a good idea to stay clear of situations that will make it easier to drink at least for the time being.
Good luck and glad you found SR,
T