Deciding when to work on a relationship and when to walk away is a skill that can prevent us wasting months and even years of our lives on partners that will never make us truly happy. Once we have learned to identify the deal breaker in a relationship we can empower ourselves to action, and then change and improve our lives. Whereas books like 'He's Just Not That Into You' explored relationship troubles in black and white, 'Deal Breakers' covers all the shades of grey that lie in between - all those areas where relationships can hit an impasse. Some deal breakers are easy to identify - one partner wants marriage, the other doesn't - yet many are more subtle and difficult to pinpoint. Dr Bethany Marshall is a relationships expert. She has identified specific male archetypes and the traits that frustrate and infuriate their partners. Here, for the first time in book form, is advice that can help any woman who is trying too hard to make her relationship work.