We all know the first step in achieving anything is simply getting started, and even the philosophy of yoga recognizes that. In the Yoga Sutras (196 "threads" of the practices of yoga written my Pantañjali) the very first Sutra recognizing this. Atha, meaning now, is the readiness and commitment to getting started to whatever it is that you are working towards. Often this is the most difficult step, but is also the most important. Commitment and readiness, that is where it begins.