"The prospect of helping people has driven me to fulfil many goals in life and this is truly my dream. Although it is great to have ambitions _ I now want to translate my goals into reality. Becoming a nurse is a natural extension of my interest in medicine. Following graduation, I found myself advising investment bankers on the stock exchange, secretly desiring the opportunity of helping others overcome illness and promote health."
Remember that tension, like all techniques, is merely another tool for making your writing more vivid and interesting to read. However, if you do use it, you must make it clear to your readers that the events you are describing have some relation to your study topic. If not, they will be confused, will have to re_read to make sense of it and may end up feeling irritated enough to stop reading.