The way you think of any situation determines the way that situation will affect you. When you think of something as negative or problematic, you will fee negative about it. When you see something positive, as an opportunity, as a blessing in disguise, as something that will ultimately be for your good, then you will feel good about it.

I thought this thought was great and it makes sense. It comes from the book: Conversations with Yourself by Rabbi Zelig Pliskin.