Overall Qi ('chee') deficiency can be improved by any number of things. Try taking ginseng, doing gentle exercise (tai qi is good!), looking at your diet and making some changes, and take your vitamins (B complex especially!)
If your acupuncturist also prescribes herbs, try and get a herbal remedy from him/her. If not, ask if he/she can recommend a good herbalist as well. It can only help.