I've successfully shifted my sleep timing earlier over the past year. Here's my notes on that:

• I had being an extreme night person as part of my identity. Realizing that waking up like a normal person would actually improve my life was step one.
• You have more hooks available to wake yourself up than make yourself fall asleep. If you can adjust waking time, bed time may be easier to change.
• What do you think about when falling asleep? I found that "free-association" thinking and non-verbal visualizations help me fall asleep faster than my default, which is to think verbally about a single topic.
• I shifted other rhythmic activities earlier in the day: I eat breakfast earlier, exercise in the morning instead of night, try to do social things in the morning, and I open my blinds as soon as I wake up.

Some other notes:

• Wash your pillowcases. They add very little to a laundry load. This is recommended if you have acne problems.
• If you have a cheap bed, you can get a foam pad to put on top. Some people really like this, the pad is cheap, and you can store and transfer the foam pad easily.