How to control dreams?

When I was 12, I would always realize I was dreaming during vivid dreams. I would then control my dreams. When I become aware, I ask myself if this is a dream, and then pinch my wrist. If it hurts then it is not a dream. If it is numb then it is a dream. The reason I realize I was dreaming during vivid dreams is because those are dreams I am conscious about. I love being conscious in dreams and I wish I could still do it. Now, it is not like that. I haven't had a lucid dream for a year. How do I induce lucid dreaming. I am testing the "reflection technique" which is asking yourself if you are dreaming during the day. Any other methods. PS I am almost 14, but please do not treat me as a kid. I am fascinated by the subconscious and hope to fully understand it.