What is admiration? How to stop craving it?

After a deep contemplation of why I couldn't move on from a relationship I found that it was because I am not getting admiration from anyone else. Actually, in past she admired me when no one else did. I was in great need of admiration and she showed me that just then. She filled a hole in me that time, made me feel good about myself. Now that we are not together, I am depressed, demotivated and not a man anymore. I am craving that admiration so much. I do not have any contact with any other girl in my life. I also realised why she admired me. But now I'd be foolish to seek the same admiration from someone else while I am not having those qualities that make people admire me anymore. Also she was my first love and soon I had developed sexual interest in her. So, admiration + first love + sexual interest made me feel on top of the world. I was teen back then. Now I can't move on. What do i do?