It takes but one positive thought when given a chance to survive and thrive to overpower an entire army of negative thoughts.
Once you replace negative thoughts with positive ones, you'll start having positive results.
Self-reflection is so healthy. Journaling works for me - when I record the details of what I'm going through, whether it's a relationship issue or negative thoughts, I can look back and see how far I've come. It makes me proud to see my progress and how I got through a bad situation.
When the negative thoughts come - and they will; they come to all of us - it's not enough to just not dwell on it... You've got to replace it with a positive thought.
Things don't just fall into place because you have a dream. You're always going to have those negative thoughts. Our minds love to play with us - we're going to be our own worst critics - but I just say to myself, 'File it back.' I just try to bring any negative thoughts to light and deal with them, so I can file them away.