Achievement of your happiness is the only moral purpose of your life, and that happiness, not pain or mindless self-indulgence, is the proof of your moral integrity, since it is the proof and the result of your loyalty to the achievement of your values.
Before you start some work, always ask yourself three questions -
Why am I doing it,
What the results might be and
Will I be successful.
Only when you think deeply and find satisfactory answers to these questions, go ahead
I do not wish to treat friendships daintily, but with the roughest courage. When they are real, they are not glass threads or frost-work, but the solidest thing we know.