Mudita is the capacity to rejoice in the happiness or good fortune of others. As a practice, mudita helps us to aim the heart toward its natural capacity for generosity, friendliness and care. In doing so, we find our hearts rejoicing.
Resolve or determination is what helps us to stay committed on our journey of awakening. It is a strength of heart that is gentle but firm. It helps us to proceed without wavering regardless of what our experiences might be.