"Everyone progresses at a different pace.
There are those whose temperament or way of life makes it easier for them to change quickly, while others need much more time to cover the same distance, and they do so with greater inner uncertainty.
It is important to remember that each positive precept fulfilled, each transgression avoided, is in itself an achievement.
The first step is never sufficient, but even the longest journey must begin somewhere."
From "Where to Begin?" in Teshuvah by Rabbi Adin Steinsaltz