Finish each day and be done with it. You have done what you could. Some blunders and absurdities no doubt crept in; forget them as soon as you can. Tomorrow is a new day; begin it well and serenely and with too high a spirit to be encumbered with your old nonsense.
My mother drew a distinction between achievement and success. She said that achievement is the knowledge that you have studied and worked hard and done the best that is in you. Success is being praised by others. That is nice but not as important or satisfying. Always aim for achievement and forget about success.
I hope that my achievements in life shall be these -- that I will have fought for what was right and fair, that I will have risked for that which mattered, and that I will have given help to those who were in need that I will have left the earth a better place for what I've done and who I've been.
We live in deeds, not years; in thoughts, not breaths;
In feelings, not in figures on a dial.
We should count time by heart-throbs. He most lives
Who thinks most, feels the noblest, acts the best.
And he whose heart beats quickest lives the longest:
Lives in one hour more than in years do some
Whose fat blood sleeps as it slips along their veins.
Life's but a means unto an end; that end,
Beginning, mean, and end to all things -- God.
The dead have all the glory of the world.
The truth of the matter is that there's nothing you can't accomplish if: (1) You clearly decide what it is that you're absolutely committed to achieving, (2) You're willing to take massive action, (3) You notice what's working or not, and (4) You continue to change your approach until you achieve what you want, using whatever life gives you along the way.