in the lead up and come down it can help calm the nerves. In mid trip I enjoy and often smoke huge quantities, but to be honest, it's like exhaling in a hurricane: inconsequential.
yeah, I stopped doing sid after my thirties. I'm much rather do the plant based psychedelics. they seem to offer more and different paths within the trip. Having said that Sid did open my eyes to the possibilities.
As far as bad trips... most of the same advice given by others....if you have any hidden resentment with your friends, admit them to yourself before you dose, acknowledge your feelings and move on...we are all fallible beings and it all comes out in the wash....realize this to shall pass...because it will...
I've been shocked with an electric cord, chased and arrested by the police, sent back to high school while tripping balls.... Managed NOT to freak out during any of these trips...well maybe a little during the aftermath of electrocution
you'll be fine, enjoy