Hello Friend, Good that you are seeking a help here. U need help. Sometimes when we are emotionally imbalanced, we can't take right decision. In that time, we need ask for help. You need to ventilate your feelings, emotions and concerns to someone who can listen to you patiently like  psychology counselor or psychiatrist. During this discussion, they will also help you explore your strengths and weaknesses and guide you to overcome such problems. Don't allow negative thoughts to overrule you precisely life which has a purpose.. Consult a psychology expert nearby immediately or reach us online..

Seems like you are going to an Identity Crisis. At your age, there are a lot of hormonal changes that happen and if one's energy not chanelized into a career, trust worthy relationships and constructive activities then one gets bogged down by 'what is the purpose of my life'? I suggest you pursue your career/academics and learn a new activity and life for that. Build your worth so that you can be proud of your contribution to the world and also to your life. Seek help from a counselor for further guidance. Best wishes, Stay Positive!