In an interesting letter to a student, Lama Zopa Rinpoche talks about transforming obstacles. He mentions:
The basic thing is “Subdue one’s own mind: This is the teaching of the Buddha.” From that comes every happiness—the happiness of today and of the next life, freedom from samsara and the peerless happiness of enlightenment. Everything comes from our mind. Therefore, it’s totally up to us. We always have to use our mind in a way that is positive because it’s the cause of all our happiness. Not in a negative way, which is the cause of all our suffering. We don’t like suffering, so we have to abandon that mind. Subduing the mind, that is what is called Dharma practice. What I’ve explained is not only what the Buddha said; if we check, it is according to our own experience.