Human life is meant for austerity. You are human so do austerity, whether you like it or not!
Peace comes when we stop being the controllers.
To have mental concentration one must be cheerful and peaceful. By cultivating friendship with equals, respect for seniors, compassion for juniors and indifference towards sinners one will destroy envy, hatred and aversion and become happy and serene.
Srila Prabhupada stressed 4 rules in japa: early morning chanting, full concentration, distinct pronunciation, attentive hearing.