make sounds, drums, chuck some vox in a slicer and randomly bash at your midi till you make a good riff, do the same but with a bassline loop in a granuliser bash notes till something cool happens. read. Listen to some awful jump up, get all the encouragement you'll need
I like jamming playlists off of Youtube, including my own ^. My Drum and Bass Playlist is severely lacking, I usually jam my Breakbeat and Dubstep ones when I'm Lifting.