thanks man, that's some really good advice. i never really paid that much attention mentally, and just got on with it. but i'll try it like you said.
only problem is, if i look at a hot girl while jelqing, or anything sexual, then it's hard to keep an 80% erection and usually it just goes full monty to 100%.
that's actually why i try to watch tv or something, to keep my mind OFF anything too sexual, as jelqing in itself gets me pretty hard.
but i'll definately try the visualization tips.