I do this really weird shoulder shrug before I start anything (jumps, footwork, crossovers, whatever). It reminds me of this skater from the 80s when I just started watching skating. I think her name was Holly Cook; she used to do the same thing.
I also look down, fail to breathe, don't bend my knees enough, ride my toe picks, bail on anything that doesn't feel right, only practice the MIF that I like, two-foot things when it doesn't feel right, talk to much, complain, cuss out loud, flap my arms and never practice enough.