Some people, especially Baal Teshuvas who drastically change their lives to being fully observant may find it somewhat overwhelming to observe the minimum halachas in being an orthodox jew (such as praying in a minyan 3 times/day)
Let's say if a particular person knows that if he forces himself, he will become irritable and stressed out and will wind up lacking in his middos area (character traits) and bein adam lechaveiro (mitzvos between other people).
Whereas, if he is more lax and neglects some halachas (like davening alone instead of with a minyan for mincha/maariv), he will not be stressed out and will be better in his middos area and bein adam lechaveiro (mitzvos between other people)
which is better?