At times, purpose is the most difficult thing to find. I am sure that with it, anything is possible. and challenging tasks become mundane in the service of that higher goal.
When I started this flower thing just a few short weeks ago, I imagined a whole series of works devoted to the single idea of "Memorial". A mass of flowers, based on an image of a funeral wreath, expanded and multiplied.
But different ideas creep in, some reinforce and some dilute and your left unsure about what it was you were doing and why. But that's not an uncommon feeling.
What's the answer? Just keep swimming.