Hi Lynn-Marie,
From a general standpoint, your practice of level I active is your cornerstone to rely on. Also small universe. This takes care of the primary organs, or systems, and also balance within these systems. The primary organ involved with this symptom is the heart, and also, it's balance with the kidneys, but, primarily the heart.
I would try a basic relaxation exercise before you go to bed, to calm down your heart, and subsequentially, your thoughts. Start from the top of your head, breathing into it, and relaxing it as you exhale. Move downwards , and repeat on levels going down, crown, third eye, nose level, throat, shoulders-arms- palms, inhale up the inside of the arms to the heart, really relax the heart( repeating on the same level until you feel it really relax), move down to the middle and bottom of the torso, front and back, pelvic area, down the legs to inside the knees or knees, down the shins to inside the ankles or ankles, inside the foot to the big toes, do each toe, spiral around the outside to the bottom of the foot, to underneath on the front part. Just focus on the bottom of feet for a bit, relaxing. Smile as you do all this. Slowly bring your focus to your lower dan tien and close. A relaxation process, a calming down of the heart. Again, stepping back from this relaxation prior to sleep, it is your daily practice of active exercise that will take care of this in the long run.
My own experience, has been that being an artist, can be taxing on the heart. Lots of image work filling the mind's eye, and trying to make a living. The best part is the life style. I had to learn to enjoy the best part.
Calm the heart, inner smile, sleep....
or,
If you have difficulty, repeat the relaxation, or , do small universe, as opposed to all those busy thoughts. Just focus on that. Lay on your back or right side. 'Be okay' about being awake, if you are. Doing the meditation is a productive way to spend the time.
love,
gallen