This is something of a puzzle. Our basic problem is that our focus center (attention center) in our brain is wired differently. Some of the symptoms that come from that are distractibility, procrastination, difficulty starting, and so on. Probably impulsiveness comes from that too. These symptoms cause difficulties in our lives. And we have struggled with those difficulties all our lives. So some of the consequences of all that are poor self-esteem and self-image, demoralization, paralysis. All of these things work together in feed back loops. For one example, if we get stuck, that will demoralize us, which will make it harder to get moving, which will demoralize us more, etc.
The tip? 1. understand all this and how it works. educate yourself.
2. develop strategies to cope with these problems.
3. therapy/counseling to help deal with the self image/esteem problems and the other issues that have developed from all of this and are reinforcing it.