A real revelation for me was moving to a thinner, more flexible pick. I've always been a fingerstyle player, but have tried briefly a couple of times over the years to play with a pick. As it's a bass I thought I needed a really thick inflexible pick and never got on with it, and stupidly never tried anything else.
Recently again I needed to use a pick for a couple of songs and I think on the back of something I read on here, I bought a multipack of Dunlop picks. I've now found I get on best with the orange .60 and particularly the red .50 ones. I'm still rubbish with a pick, but much better than I was!