I feel drowsy all the time. How can I keep myself motivated and awake during the day. I take a antidepressant Celexa (citalopram) 40MG?

Diet change. Changing your diet can help. Reduce or eliminate sugary drinks and caffeine since they can have a roller coaster effect on your energy level. Dont skip meals. Try to get good sound sleep since you can feel tired if you don't get good sleep. Exercise can also boot your energy levels. Eating apples can boost your energy.