When I say the right time, I also mean the time when you feel you are ready financially for this project. You do not need to do all the painting work yourself because you do not have enough budget to hire a professional painter. Just wait for the moment to come and hire someone you can really trust. The results will not only be better than what you can do yourself (unless you are a professional painter and decorator), but also the time spent doing the whole work will be few times less than the time you will spend painting.

A good option for painting is also the time when you go away on a holiday together with your kids and wife. You will avoid everyone being involved in one way or another with dust and dirt and if you can save this to your favourite people, you should consider the right time.