Most people today talk about self-improvement in the physical sense: that is, keeping a healthier and healthier body day by day. They forget the most important part of improving oneself: the mind.
Self improvement in the mind is all you need to take care of yourself, and 'improve', if that's what you're really looking for. Don't be a stereotype and think that mind-improvement is all about Yoga... it really is about meditation. And you don't need to sit down and close your eyes for that, you can be doing it even while traveling in a bus from your home to your workplace. A little bit of reflection in a day is all you need to do to 'self-improve'.
