I'm not too sure how much you would be able to "remember" from planning your life, first because I don't know how much we actually plan of our lives, and second because there isn't many people who remember that, however who knows, you could be one of the lucky ones. I think though that no matter what we always end up doing what we had to do, and it always happens what it had to happen, but it's nice to believe we have free will to change our future so we are motivated for action, and to "make changes" in our lives. So who knows, maybe posting this thread is the first step and what you had to do in order for things to start to "change", although this could have been planned.
My advice regarding then making "the right decisions" is to follow your heart, ask yourself "what do I really want to do?" and do that thing, even if in your brain is not a good decision, I think you'll be happier if you do what your "heart" tells you.
I don't think you're thinking about it (well, hopefully not) but I just want to say that suicide doesn't solve anything, the core problems that you had you'll have them again in the next life, because you have to work with them, death solves nothing but the external and circumstantial, and not always.