Feeling is the consciousness of the resulting conditions - of success, failure, equilibrium, compromise or balance, in this continuous rivalry of ideas.
To me the ego is the habitual and compulsive thought processes that go through everybody's mind continuously. External things like possessions or memories or failures or successes or achievements. Your personal history.
Continuous effort - not strength or intelligence - is the key to unlocking our potential.
Failure is not fatal, but failure to change might be.