The C-word...
It's all about CONSISTENCY.
I frequently get asked by students how often they need to practice yoga or pilates. Well, that depends on what your goals are. If you genuinely want to see and feel results, not just physically but mentally too, then it's all about being consistent.
However, consistency looks different for everyone. For some, getting on the mat for an hour a day is a realistic goal. For others, 10 minutes, 3 times a week is much more manageable. You need to sort out what you can commit to, and do just that. Commit.
I always say that 15 minutes of authentic, connected, mindful movement a day is much more valuable to your whole body/mind system, then an hour of disconnected and "should-driven" movement.
Be straight up with yourself - what can you commit to, commit to that and then enjoy and be present with yourself and your breath every moment you're on your mat.