From The Depression Workbook by Mary Ellen Copeland:

What To Do When You Are Getting Manic

• Get help before things get out of hand. Do not hesitate to call a doctor.
• Use your support system. Let your supporters know how you are feel with them for as long as you need to, expressing all emotions that come up.
• Stay at home or in familiar surroundings. Steer clear of stimulating environments such as bars or dances.
• Reduce the stress in your environment. Keep away from stressful people.
• Make a list of things to do for the day and stick to it.
• Regulate your activities to avoid overstimulation.
• Restrict yourself to activitieshat are quiet and soothing, such as a long, slow walk; a long, warm relaxing swim; sitting for a while in a steam room or hot tub; listening music; reading a soothing book; watching a nature show on TV.
• Keep a list of things you can do to use up excess energy, such as washing floor, weeding the garden, painting, cleaning out closets; but make these activities are not overstimulating.
• Practice relaxation techniques several times during the day.
• Avoid sugar, caffeine, and alcohol. Eat regular meals. Do not skip a meal or eat too much of anyone thing.
• Do not make any major decisions. Put off decisions until you feel calmer.
• Do not commit yourself to extra activities outside your usual routine.
• Avoid spending money. Give your credit cards and money to a trusted person.
• Regularly stop what you’re doing, bring your focus onto yourself, and self how you are doing. Keep your mind focused on what you are doing. Don’t allow your thoughts to ramble or become obsessive.
• If all of your relaxation techniques are not working to put you to sleep, are not sleeping, get help from a doctor right away. Loss of sleep exacerbates mania.