Worry over the future breeds anxiety. Fretting over the past breeds depression. Both can stop our good movement forward and put us in front of the TV with a bad movie and too much of the stuff we don’t need to put into our bodies. That horrid cycle, of course, breeds regret and dread that brings us to more of the same. I believe that is called “insanity”.
Instead work to stay in the present taking the next step needed for living to the full the “now” that is before you, having learned better ways from past experience and pushing forward with hope that right action now will produce a better tomorrow. This is living life with power that produces a good outcome and protects our journey from wasting away.
Plan for the future, yes; but let the first plan be to live your best you in the now you have to possess.