God makes three requests of his children: Do the best you can, where you are, with what you have, now”
African-American Proverb
When I stumbled on this proverb, I found it rather basic and yet profound and progressive.
Let’s break it down:
1. Do the best you can
Doing your best requires an effort - a conscious one too. To make sure you're not misapplying your effort, you need to first assess where you are in life and then go the extra mile. You have to be honest to yourself - noone can do this for you. Until you come to a realisation (& accpetance) of where you are and how close or far you are to/from your target you cannot progress. Then you can take the next step even if it means stretching yourself. Yes, you need to stretch yourself to do your best...and stretching is a continuous process.
There are lots of books that give guidance on how to assess oneself and move to the next level. Some that readily come to mind for me (and which have helped and continue to help me) are:

Understanding your potential
Releasing your potential
by Myles Munroe
You’re born an original, don’t die a copy
An enemy called Average
by John Mason
There are several other books there but it doesn't end with reading them...you need to do something. In summary, “You are doing your best only when you are trying to improve what you are doing” (Author unknown)
Let's move on...