These are good rules to think about, though these kind of things I consider 'rules of thumb'. 5% capital is higher than I usually put into a position, though I am willing to go above that rarely if the stars align.
I think any music you like can help. That said, I believe music without words and at a moderate pace is best. Something with a light groove, and an upbeat attitude. Reggae music can be a good one, if you like it.
The troubles Ive had most in trading have come from trying to rely on technical indicators while ignoring fundamentals. This led to a lot of small good trades and then one unseen plummet when something happened that I didn't see coming (and probably ...