When you're trying to get jobs, include a cover letter. This would contain why you are healthy for the position and some information about yourself. Cover letters make things personal for that work that you will be obtaining and separate the remaining portion of the pack who just include resumes and you and put on staffing agencies London.
Never talk negatively of job experience or a former employer in your interview. You have to be positive at all times! Think of looking into a guide from the local library that could enable you to maintain an optimistic focus in your interviews, if you are struggling to maintain this outlook.