By Sam Harris in the Washington Post’s On Faith:

How to Believe in God
Six Easy Steps

1. First, you must want to believe in God.
2. Next, understand that believing in God in the absence of evidence is especially noble.
3. Then, realize that the human ability to believe in God in the absence of evidence might itself constitute evidence for the existence of God.
4. Now consider any need for further evidence (both in yourself and in others) to be a form of temptation, spiritually unhealthy, or a corruption of the intellect.
5. Refer to steps 2-4 as acts of “faith.”
6. Return to 2.

As should be clear, this is a kind of perpetual motion machine of wishful thinking—and it leads, of necessity, to reduced self-awareness and diminished contact with reality. But it is reputed to have many benefits, and once you get it up and running you will be in fine company. In fact, from the looks of it, you will never be lonely again.