Keeping the same destructive thoughts or perceptions and expecting to feel better is the express train to insanity. The good news is that there are an infinite number of ways to interpret any given event, each just as justifiable or ‘correct’ as the other. By changing the meaning of what we perceive, we also alter its emotional impact. (Goleman, 2006) In fact, it's usually flawed and delusional thinking that gets people into trouble, and what we're trying to do is recover a more correct way of thinking. Humans are innately poor programmers when it comes to controlling our own thoughts, and as a survival mechanism we tend to pay more attention to our fears and our negative thoughts than we do a more balanced perspective. It's better to assume something poses a threat and be wrong than assume it doesn't and get eaten or injured. This type of over-reaction and paranoia has aided our survival in the life-death struggles of the past. But in modern day life where things are much more complicated, it's often a burden. We're essentially programmed to see and expect the worst in any given situation.
So as Albert Ellis notes, "the more rationally people think, the less they are likely to create and sustain disruptive feelings." Rather than trying to change your emotions with the same thoughts, change your thoughts and perspectives. We have little control over our emotions, which are impulsive. The most you can do is suppress them, (an often necessary skill), but suppression won't help a person heal. Flip the coin around. First change your beliefs, and your emotions will follow suit.