I feel lost, I've hit a new low after failing two engineering cles.?

Sounds like you are in engineering because it is what your parents want or what you think will get you a good job. This may be true but in the end if you are unhappy it is not worth it. It is hard to know what you want to be at 20 and can be at 30 0r 40 too but if you are struggling to concentrate in cl it may mean you aren't interested in the subject. My opinion is that you have to do something that you at least like but you are better off doing what you love if you know what that is. Money is a necessary evil but if you are doing something you really enjoy generally you will be happier and will do it so well that it will take care of your needs financially. There are lots of people who take a vocation based on practical reasons but if you don't really like it you'll find that you will struggle with it and even if the money is good eventually you will look to do something else. Now is the time for you to really collect your thoughts and decide what you really want to do before you get responsibilities that prevent you from making a change. Take a career test on one of the many employment sites and see what your strengths really are and go from there. Good luck.