How do you improve your consistence?

In general, when learning something, I tend to be very intrested in whatever I'm trying to learn during the first few days, but then I just start to stray away from whatever I was trying to learn, it's like my subcounscious actively tries to find excuses to keep me away from learning whatever I was trying to learn. I'm tired of just starting stuff and quitting it. So, what is a way to be consistant, no matter what, and just you know, get it done, from the beginning to the very end without detours or distractions or excuses, how can you achieve maximum consistence in goals and self discipline in life?