Step by step guided visualization
Here is a short step by step guide for a basic visualization technique:
1. Find a quiet place where you wont be disturbed.
2. Close your eyes, take some deep breaths. Slowly inhale through your nose, count to five, exhale through your mouth, count to five again. Do this a few times until you feel fully relaxed.
3. Imagine a clear mental picture of what you desire. Focus on every detail. Pay close attention to things like textures, colours, smells, or sounds. Imagine the touch, listen to what you hear, smell the things around you, can you even taste something?
4. Feel how good it feels now that you have (achieved) what you desire. Feel it deep in your heart and anchor that feeling.
You can stay in this state as long as you wish. When you truly feel the good feelings of your achievement, you can then open your eyes again.
Just remember the more concrete and detailed you imagine something, the stronger your subconscious will imprint this new reality.
I recommend that you get into the habit of a daily routine. The best time to do this is right after getting up or before falling asleep.