Just do it!

Do you have a list of things that you have always been wanting to do, but never get down to doing it? Why not try sorting them out according to their level of priority? When you have sorted them out by priority, just start doing it.

If the activity is huge in terms of magnitude and involvement, break it down into manageable steps, and then work on each step one at a time.

I think the whole thing about getting things done is to JUST DO IT! Don't think too much. Don't plan too long. Along the way, there will always be rooms for improvement. Leave that till the end when you evaluate the results of the activity. Incorporate the areas of improvement when you next run that activity again.