Hypnotherapy is a therapeutic technique that uses hypnosis to access the subconscious mind, the most powerful part of you, to create the change you desire in your life.
Hypnotherapy sessions is combining the powerful effect of hypnosis in a safe, confidential, and comfortable environment.  Each therapy session starts with a congnitive discussion about your goals and desires, followed by hypnosis to instruct your subconscious mind to support those goals, and desires.  
Subsequent sessions that follow allows time for cognitive discussion to ensure the therapy is in line with the desired goals.  
"The truth is that we can learn to condition our minds, bodies, and emotions to link pain or pleasure to whatever we choose. By changing what we link pain and pleasure to, we will instantly change our behaviors." ~Tony Robbins