You feel down, everyone in life does at some point. Try being practical about it.

Step 1: Practice good sleep hygiene

Step 2: Start Exercising - preferably pick up a cheap activity that you can do by yourself like throwing hoops or juggling.

Step 3: Start investing. Invest time in your education. Invest time in your relationships. Invest time in refining yourself. Any time spent in making yourself better in any thing (and I do mean anything) is time well spent.

Step 4: Confide in your loved ones, parents or friends and ask for support. You have every right to feel down and every right to ask for help. If they truly are close to you, they will not make you feel ashamed of it. If they do, get rid of them immediately.

Step 5: Learn how to spin your failures into success. It took you 6 weeks less than you expected to learn what you needed to learn in Malaysia. Congratulations. It took me 10 years to be in a bad relationship to find a good one. All you need to do is beat that. I'm positive you'll make it.