Hi chocaway,
From what you’ve said in your last post, I feel that you’ve very difficult time remaining in present moment. And that’s why you are experiencing forgetfullness and anxiety about future. But in order to live in present, one needs to tame one’s own mind, for which meditation can be very useful. Therefore, if possible I’ll ask you to look into Vipassana Insight Meditation. I’ve written a very long reply about Vipassana in the post
“http://tinybuddha.com/topic/major-life-anxiety-at-21-and-have-never-experienced-it-before-help/”.
In that post I’ve also listed some documentaries on Vipassana, which you should watch, in order to understand about the technique.

As you are planning to attend university from this September, I think, you must attend atleast one 10-day Vipassana course before joining the university. These courses are held all over the world, just find out the one nearest to your locality as given in their official website “http://www.dhamma.org/en-US/index”. And yes these courses are completely free of cost and no hidden charges.

This meditation technique is 2500 years old, and believed to have been invented by Buddha himself.
Sometimes we think that, when we think too much then we can find out solution to our problems. But actually sometimes it’s very necessary to shut off our mind from all the thoughts. And this Vipassana meditation technique will teach you how to empty mind and only observe the things as they are without thinking.

This meditation technique will certainly help you deal with not only anxiety but it can change complete attitude of individual towards life in a positive manner, provided you sincerely practice it regularly in your daily life after 10-day Vipassana course.
As you are 19, I think you can certainly go for 10-day Vipassana course, because minimum age to attend these courses is 18.
If you feel that, you are not ready for full fledge 10-day meditation course, then there are also 3-day courses organised for individuals below 18 years. You can ask special permission for attending 3-day course.

I hope above information will help you in taking correct course of action.
Take Care.

ginkosan