Consult a clinical psychologist.

I believe you are 17,Probably this was your first relationship so the impact is noticeable everything is new even when you were in the relationship things must be new and obviously beautiful we adapt easily to things that make us happy so now when you had a breakup the transition is making you uncomfortable and you tend to feel lonely and not understood by our people. Give little time to yourself inculcate new hobbies Above all these are the most crucial years of your life your future depends on your today.shift your target to your career people who love you will automatically be a part of your life. Don't force yourself to be happy just accept the reality respectfully and do things that make you happy,spend more time with family help ur family members in household chores ,join some interesting courses & keep yourself busy.

Talk with a counselor so that you can understand your life clearly .

Hi, I understand going through a breakup can be tough. You are not feeling happy. You can talk about the breakup and how you feel about it with a psychologist and counseling sessions will help you. I understand you want to feel happy and it is important to know that you can feel happy. A psychologist will guide you on how to get over a breakup and how to feel happy. It is important to remember that you have your whole life ahead of you and you can find happiness.

Break Up blues should clear away in some days. Believe in your abilities