This is a nice post. I think Warren Buffet is one of the people that advocates compounding interest. Compounding doesn't necessarily have to apply on finances only, but as you've said, in our day to day life. It can be in work and training, it can be in our health. If you want to accomplish or change something, you also need to do something. If you can't immediately get it done, small incremental changes will add up and get you there.
One of the challenges is that it is hard for us to apply, because we don't really visualize where it leads in the future well. It is also hard to make small" insignificant" changes, because they don't feel like they matter at the time. Our whole lives though are a compound of small, insignificant changes...