Things I failed at:
1. Going to the IIT
2. Being a topper in 12th Boards
3. Applications at Google and Facebook
4. Interview at BCG
5. Finding happiness while pursuing PhD in the US

Things I succeeded at:
1. Being an online teacher, and being happy with it
2. Mentoring startup founders

It is all about putting in the efforts and not attaching your identity to anything. Over time, you will figure out the answers.