Some days you don’t even know why you feel down. Even if you manage to bring up joy, there will be days when it fades away quickly and you’re too tired to bring it back. So it is easier to bring up joy on some days and harder on others. In any case, even if the difficulty persists for days, please do not think that your training is failing. It is simply a reflection of imperfect mind in the day-to-day variance in an imperfect world.
