If you spend your time gazing into your crystal ball that actually looks backwards and decides the future according to what you've experienced in the past, you will be convinced that things aren't going to work. For example, you might say to yourself, "This friendship is bound to fail, just like my previous ones." It probably will, because you've just rubber-stamped the outcome in your mind, and your subconscious will do its best to make you fail so you'll be right.
•Learn to take things on a case-by-case basis. Just because you had a bad breakup with your previous boyfriend doesn't mean that the same will happen with your new boyfriend. If you keep having the same bad breakup for the same reason, then it's time to do some soul-searching, but if it was a completely different situation, then don't lose hope in your current situation or it will show.