For me, I think it is about remembering that whoever we become is born out of who we are now and also that we are not only one thing. To act on desire, whether it be for another person or for a change is situation, is much easier than to be with the desire and try to understand what your desire really wants. From where in us is a passion born? What is it trying to tell us?
Your post reminds me of a line from Rilke’s Letters to a Young Poet:
Do not search now for the answers which cannot be given you because you could not live them. It is a matter of living everything. Live the questions now. Perhaps you will then gradually, without noticing it, one distant day live right into the answer.