Stop worrying and start living life. The minute we separate our worries from life, the easier it becomes to gain control of our lives and start to believe in the process more.
Most people feel anxious from time to time, but it tends to be a problem if the worry is out of proportion to the stressful situation, persists when the stress is over, or occurs when there isn't an obviously stressful situation.
There will always be periods of life that are more challenging than others. We don't have control of that, but we can choose to respond to a difficult situation in a more helpful way.
Instead of focusing on what could go wrong, think about what could go right.