If you want to try out tren but have a quick temper then I suggest you use Trenbolone Enanthate. Shorter esteres have more potential to cause sides as your hormone levels fluctuate way more on a daily basis so Tren-A has more potential to make you angry. If you haven't done it before, start out with a low dose and work your way up.
Tren is not for you. Given that you are already quick tempered, you could end up committing a violent act that could destroy your life. And don't think for a moment that that doesn't happen because it does happen.
A good tren cycle:
Begin at 100mg every other day and often and in many cases creep its way into dosing levels of 100mg every single day during use. Such every day doses are generally not needed for the off-season athlete; such doses are not going to create enough added growth to warrant the added physical stress; however, daily doses of 100mg per day can be very useful during a diet, particularly later on in the diet close to a competition.
I would not run tren if you already have some anger or aggression issues. Steroids will enhance your natural disposition. Here is an article on this topic...