If dreamed you that you do not know how will dispose of the voucher, then in real life you quite often worry on trifles, distracting from the solution of serious problems. To lose the voucher means that you will be comprehended by small disappointment which result will be an acquisition of invaluable experience. To receive the voucher as a gift means that you will manage to seize the opportunity given you.
Be sure and keep any other thoughts out of your mind before drifting to sleep as a cluttered mind can decrease the chances that you will remember your dreams upon waking. Also, focusing on remembering your dreams upon waking in the morning is another very important thing. This sounds very easy, but is often hard for some to do. Interpret a dream by "dictionary dream of interpretation"
When you very first wake up, simply think about your dreams. Don't allow your mind to drift off to other things, just lay there and think about the things you dreamt about the night before - dictionary dream meaning.