It really is practice, practice, practice with yoga. Doing a few poses every other day isn't a huge time commitment, though, which is nice.
ETA: I managed to get about an hour of yoga in tonight, despite some pretty heavy duty emotional upheaval from an unexpected visitor.
Backbends = tears. I've heard this before, tonight I got to experience it firsthand.
The upside: it's crazily cathartic and I feel calm and at peace now. I need to remember this when things get to be too much and I feel like bailing on yoga, which is my Achilles heel as far as motivation goes these days.