Jigme Lingpa has advised us that, as practitioners, we need two things: confidence and humility. When you lose your inspiration, when you think that you are lazy and you don’t have devotion, then you should think, ‘The fact that I think like this is good, it means that I am considering this as a problem.’ That realization is some kind of renunciation, or at least food for renunciation. And thinking like that, having that kind of attitude, is confidence.
Then again, sometimes we should think, “What I am practicing is not enough.” Not only sometimes, actually, most of the time we should think that what we are doing is not enough, we have to do more. The purification that we are engaging in, the accumulation of merit that we are doing, is not enough. Never enough. That is the practice of humility.
―Dzongsar Khyentse Rinpoche