Premanand Maharaj Ji
Why do I lose discipline and perform badly even when I want to do well?
Practice and restraint after success
When we get a little success and big encouragement, we drop practice and restraint, and that is why people fail. Whoever keeps both practice and restraint cannot fail, so fix the lapses in each.
One who practises and is self-controlled can never fail anywhere. Fix the flaws in your practice and your self-control.