Sharpen your intuition.
Intuition belongs to our unconscious, which means that in order to improve it we need to work it through.
For a long-term effect, meditation, trance, and self-hypnosis (autogenic training) are the best. These practices allow you to temporarily shut off (weaken) your conscious, in other words intellect, and other superstructures over the unconscious, giving it an opportunity to come out. In addition, meditation and similar practices harmonize internal processes, help you listen to your body, your sensations, i.e., your inner voice.
There is an effective technique for gaining insight.
Step 1. Formulate a task for your intuition (write it down, draw it, say it).
Step 2. Shift your focus to things that are not related to your task.
Step 3. Turn off your mind - sleep, meditate.
Step 4. Go back to the original task, the inner voice will tell you the right direction.
Improving your intuition is most effective with a complex approach.