Global
Life can be a real dog at times... and twice as hard to control when its gets outside the boundries you laid out for it. You sound as if you are letting yourself get isolated and disinterested. You have to do a couple of things and fairly quickly.
1/ find something that you have control over. Be it a bridging course to get yourself those subjects you need, or an entirely different and fresh course of study to tide you over until you complete the requirements for your chosen course. For example, I did a first aid course.
2/ find the little positives in each day. Its dammed hard to for the first few days. Keep a diary. This helps to sort your thoughts out, acknowlege the nice things of the day and lay out a plan.
3/ Find an alternate or an out to your plan... look at options. Good planning always plans for options that may not eventuate. The plan should be concise and easy to follow. You can always change it later.
4/ Steer clear of things and activities which are "set up for failure". By this I mean pick some very acheivable goals, dont pick those that are going to be difficult or are high risk. Those come later. By doing the achievable, you are turning your mind set to small sucesses, thereby grounding yourself to create larger successes down the track.
5/ Avoid self critiques for the time being. If you find yourself chastising yourself for anything, turn it into a positive. Dont let youself reinforce the negative aspects.
6/ Reward yourself, even if the accomplishement was minor in the eyes of others.
Ive been there but each person has their own angels and demons to deal with. You have to try to change the pattern of thinking toward doing something to regain control of your life. Even if it is one step at a time. The religion aspect is not for everyone, but the bible as a text reference for life in general isnt a bad thing. Your family are trying to support you in the best way they know how, and depending on root causes and treatment, often the best way to get family to help is get them involved in your treatment and recovery. Communication is a special and effective tool. They will learn the boundries in which they are allowed to assist, support, or leave you to your own confidence building. This can be done in conjunction with a physcologist or similarly qualified person. If you dont have confidence in a practicioner, find another, but at least listen and draw your own conclusions.
Drug therapy is sometimes used a "bridge to recovery" as someone put it. Deciding on what drug, dose and how long is usually decided by ther practicioner, patient and others involved in the process of recovery. Some drugs do have rather unpleasant side effects, and these should have been explained to you by your Dr and pharmacist.
Another symptom you may be experiencing is sleeplessness. This alone can result in fatigue and further distress. Work yourself a "sleep program", read a good book in bed about 1/2 hour before bedtime. I found the biographies of sucessful people a huge help and you cant help but be inspired. Then it doesnt matter if you dont sleep so well, but at least what little sleep you get will be in a positive frame of mind. Bad dreams can be reprogrammed with better outcomes as each occurs, no matter how confusing they may be at the time. Often its just your head trying to "get around things" for the time being.
You have pleanty of years ahead. Dont let a "downer" program the rest of your existance. If I can get over a home invasion / rape, 4 years of physical and emotional abuse and crippling debt, and come through a stronger (and believe me - a happier more objective) person, it proved that if you put your mind to it, do something contructive and take each day at a time, then huge achievements are the outcome....