@9BBN No worries, I'm sorry I misread you. I just had some weed so that's probably skewing my perception.
The more I think about it, it doesn't make so much sense to consider whether a person is or is not generally an impulsive person. Because it seems to me that someone who is not normally impulsive could easily become impulsive about a specific subject (e.g. suicide) under the right (horrible) conditions. After all, aren't people with bipolar more impulsive during their manic episodes? That doesn't mean they're generally impulsive people. It just means that some chemical switch gets thrown in their brain, and bam, they're now in an impulsive mode.
I think I wasn't in the mindset of the PPeH before because, not only had I not read any of it, but the PPeH claims to be written for the elderly and terminally ill, who are subject to becoming incapacitated at any time and so derive a lot of peace from having their means available at any time. It seems to me that a lot on this forum are more like myself: not elderly, suffering psychiatric illness, i.e. people that may be recoverable and who haven't firmly decided they will want to CTB some day. Certainly I know there are terminally ill on this forum, and my heart goes out to them truly. But a lot are younger folks with psychiatric conditions. People who are prone to waffling back and forth endlessly on whether or not they should CTB. (i.e. who do not have the quiet resolve to CTB that some elderly folks have.)
I think @greyhound nailed it. Does CTB seem absolutely inevitable for you? Then possessing means will probably give you peace. If you are undecided, it may not.
My initial perspective in creating this thread was strictly of the "I'm an undecided young person with depression and maybe I'll recover" variety. Reading the PPeH and talking to you, @9BBN, and the others, has expanded my perspective. Successful thread!