The most important single thing is having an idea and putting it into practice and seeing bear fruits. Change happens one person at a time. He who stops being better stops being good. Nobody makes a greater mistake than he who did nothing beacuse he could only do a little. Whoever is in a hurry shows that the thing he is about is too big for him.
Most errors cost more to handle than they cost to prevent.
All you can do is all you can do, and all you can do is enough. Never forget that only dead fish swim with the stream. If I had six hours to chop down a tree, I would spend the first four hours sharpening the ax. Each problem that I solved became a rule which served afterwards to solve other problems. A plan is valid until the opponents make their first move.