Should I start taking choline supplements or omega 3?

I seem to feel an increase in my cognitive function 2 days after i drink ensure. Ensure contains Choline, Omega-3. I think choline might be responsible for my boost in cognitive functions. I've always felt brain slow for my age. I'm 21. I think I might be deficient in these nutrients.|||Omega 3 is more stronger but you should contact your family doctor first