Ask HN: How do you stay consistent in the face of other interesting things?

My biggest problem is I am inconsistent. I've been trying to "fix" it: setting smaller goals, doing a little bit every day, etc.

But as soon as a have a solid plan, which I am sure can take me to the next step in whatever it is - this knowledge, this certainty causes me to lose my interest.

It seems the only constant thing about me is the thrill of discovering something new and unknown. As soon as it moves to the "known" - I lose interest in it.

This mindset, this kind of character is really harming my long-term well-being, and I must admit I don't know what to do about it.

Has anyone had similar experience? Has anyone succeeded taming it?