I dont practice as such. I learn new, to me, covers to play in the band, or compose my own songs and bass lines. Doing so makes me play lines and techniques I would not normally employ. I cant stand regimented routines or structured plans/lessons, I had enough of that at school. For me music is freedom from all that. If I don't enjoy something I don't do It. If I were a pro session musician I would have to "Practice", but the very thought of having to play what I am told too is my idea of hell. I love music so I wont do anything that spoils my enjoyment of it.