Do you feel you don’t deserve the rewards of your hard work, or that you stumbled into it and you could easily plummet from the new height?

Do you feel you don’t deserve the rewards of your hard work, or that you stumbled into it and you could easily plummet from the new height?
Is fear of failure the ultimate dream killer, or do you nurture it as an excuse for your refusal to try?
Do you have admirably-high standards and an unshakeable will to achieve those standards? Or do you suffer from crippling perfectionism?
How do you know the difference between fruitful perseverance, and banging your head against the wall to your own detriment?