You will find that there is a point which causes a very definite response. While you are in the normal waking state this point will most likely be on the hard palate. Press firmly on that point with the tongue tip.
Next, make sure you are sitting comfortably with your spine very straight.
It will also help you to focus your eyes in a particular way. Focusing at the middle of the forehead, between the eyes, at the tip of the nose, or towards the upper lip are suggestions. It is possible that none of those positions may work and a normal relaxed focus may be best. for you at this time. Find out which position gives you the most energy and fix your gaze there.
Now tell your body to relax and withdraw all holding patterns your muscles are in. Let everything go. Just keep pressing the tongue tip at the location on the palate and be patient. As you go deeper and deeper you will discover tension patterns at those deeper levels. Consciously let them go too. Keep your focus on any pattern which has not yet let go.
Nothing much may happen for some time. Periodically check to make sure if the point on the palate has moved. It can do that. Especially if you are having a lot of internal dialogue.
Then all of a sudden a shift will happen. You may experience a need to forcefully exhale and breathe deeply. Your ears may pop, your spine may click and you may experience a tremendous release of muscular and emotional tension, Whatever. Your body will adopt a new posture and you may notice that your heart and shoulders feel like they have released a huge burden.