I felt kinda rusty with my painting lately.
What helps me is to do a photo study or paint from reference and try out new techniques and brushes that feel right.
Being in a technical stump is sometimes much worse than an artblock. Cos for an artblock the only thing holding you back is just creativity. But when you are like: I feel like I suck it REEEAALLLY sucks. But doing a photo study and taking the time to observe colors and get the impression right really helps me out.