How do you find out your worth? Is money the only validation that determines your worth? If you find it difficult to let go of a job which is paying you well, to pursue something that you love to do - how can you resolve this dilemma?
If a dog to run behind you, or your tail needs to be set on fire - for you to run fast - that's not a pleasant way to run! Of course you need to run fast, but it is equally important that your experience of running fast is pleasant. So, running is not the only important thing, how you experience it, and what comes out of your running is equally important.
There is no such thing as failure! It's just your idea. The external influences have trained you to think of life in terms of success and failures. Success and failure should not be contingent on what recognition you get in the world. Your success is determined by how joyfully you lead your life, regardless of what situation you are in. Whatever situation comes your way, you can use it as a stepping stone, and use it make yourself stronger and better. Sadhguru narrates a beautiful tale of a farmer and Shiva to illustrate this.