I always spend significant time at the close of an event leading delegates on their commitments. Those who have attended events with me will recognise the mantra - nothing changes until something changes! In my coaching too I do what I can to encourage and support clients in forming, validating, enlivening and following through on commitments.
But commitments are curious things that are often left unresolved however, your impact, your growth, the positive change that you deeply desire is contingent on the quality of the commitments you form and successfully follow through.