Hello Thanks for query . Weakness and loss of energy that you have is due to multiple factors like Stress ,depression ,lot of travelling and low blood testosterone levels . You can use Testosterone Gel which is to be applied over shoulder and chest daily for few months ,This will gradually increase your Testosterone levels in blood and will help to increase your vitality and energy . Following measure will help you to boost up your confidence and increase your energy levels 1) Practice regular exercise for 45 minutes followed by meditation for 1/2 an hour in the morning. 2) Take high protein diet rich in vegetables and fruits and Vitamin A,C,D,E.and Zinc 3)Take anti oxidants like Almonds 5-6 everyday.. 4) Avoid alcohol and smoking.. Thanks Dr.Patil.