Why do we indulge our weaknesses?

We don't think about where our habits come from. It doesn't matter whether they're bad or healthy. Eventually it seems to be just an essential part of life: to smoke a cigarette or to eat a piece of cake to relieve stress. Unfortunately, most of our weaknesses – are attempts to stifle insecurity and neuroses. However, without paying attention to these problems, there's no chance to solve them.