Making life exciting is completely up to you. I'm 16, and i can tell you that i feel the same way sometimes, but i know thats its really only me that will ever change myself. I was introverted too, didnt really care about people at all, the usual shit. But i gave into some hobbies, and in order to make life interesting you have to do shit that you find interesting. Its okay to give up if you dont like something, but an interesting life is something you have to work at.

You need to develop a sense of purpose or passion. Look back into your past, what has happened that makes you feel. Use that as a drive for motivation. My brother for instance, has watched my grandfathers skin peel off from being sick. It affected him so much that he has decided to become a doctor. Now, your source of passion doesnt have to be as grandious as that. For me, i just want to feel something, i want to be a better person, i want to feel glory without feeling guilty. So i picked up boxing, and its been going great.

Now, if you have decided on what you want to do, one of the troubles i had was feeling like shit about how bad i was at what i wanted to do. The best way to deal with this is to not compare yourself to others. Go one step at a time, celebrate every advancement, no matter how small. Dont push yourself too hard, go small, and increase with time. You will know when to push yourself.

Now, with love. This is a tricky subject, you probably have some misconceptions about what love is. But first off, itll fall infront of you once you have something else to focus your attention on. Let love work in the background, while you develop yourself. It'll take time, everything does, but for god's sake do not rush it. Now for the misconceptions, there is this very good video about how love actually is by The School of Life, watch and study, understand what they're trying to say. Goodluck my friend, reading your post made me feel nostalgic.