Decisions, Opportunities, and Life in General

It seems that whenever I think I have my plans for the future (even the immediate future, like the next week or two) all set out perfectly, is exactly when everything decides to jump out the window - self defenestration, if you will. It's not always bad, but it is always unexpected.
This time it all started with a phone call. It was on my birthday. I didn't hear it, and actually I didn't even answer. But they left me a message. It was Macey's, my supposed summer employment. I've been a faithful employee for years, and they have kept me on as a summer employee for quite some time. In the past they always seemed happy to have me back. They don't have a spot for me. They don't have hours, and when they do have hours, it won't be full time like I need. Well then. Source of income - gone.
At nearly the same time, I started considering becoming a TA for Linear Algebra (Math 334), which I love. I enjoy the class, it makes sense to me, the professor is nice (wonderful actually - the perfect grandpa figure), and I even like the textbook. I love to teach, and I like helping people with their homework. While I was still thinking about it, he emailed me. He actually emailed the top nine students offering them a TA position. I jumped on it. "I am interested!"
Turns out that Dr. Barret is only teaching the Honors section of the class next semester, which means that they meet every day, and that the TA teaches on Tuesdays and Thursdays. They will also be teaching Matlab - a computer program language/program for more complex math - which I don't know at all.
I met with Dr. Barret to talk about it, and he seemed optimistic about me getting the job. He was super relaxed. Only one other student has shown interest, and it sounds like they don't have my pizaz. :)
Anyhoo, the point of all that is that I might have a job for the fall, which is comforting considering my current financial situation. The one problem is that I have to teach myself Matlab over the summer, which would clearly be easiest if I was here at BYU, where it is on all of the computers.
I talked to my dad, and his response was, "well, maybe you need to stay in Provo for the summer." I could get a job, maybe get some classes done, and learn Matlab. I really actually want to. So there is that decision. Along with the opportunity. And I have to face it all, and figure it out, while acing my finals. Here I go.