Having a imagination takes time and work. Take time and focus on what you enjoy and go from there. You don't need any drugs or alcohol. Dedicate what you love into what you see as for the current and future. Record your ideas to track progress. By doing this, it will help you materialize what you hold in your mind and expand your ability in expressing yourself.

Another exercise you can add to increasing your creativity is visualizing a word as if it is happening in front of you. This is what I have done for many years. So here is your challenge to benefit yourself and everyone else around.