Before man made us citizens, great nature made us men.

No single repetition looks like it is doing anything, which is the reason most people stop. The effect of small regular effort is invisible over a day and obvious over a year, with no point on the way where you can see it working. Persistence is mostly the willingness to act without that feedback.

Choose one thing small enough that you could do it on a bad day: twenty minutes, ten sentences, one phone call. Do it on the schedule rather than on the mood. Then leave it alone for three months before you judge whether it is working.