Learn from the past, set vivid, detailed goals for the future, and live in the only moment of time over which you have any control: now.
Don’t dwell on what went wrong. Instead, focus on what to do next. Spend your energies on moving forward toward finding the answer.
Do not brood over your past mistakes and failures as this will only fill your mind with grief, regret and depression. Do not repeat them in the future.
Change is the law of life. And those who look only to the past or the present are certain to miss the future.