People say some tricks like : "Stare and focus on the beauty of the eye" "Try to focus on its color" "Just don't look away"

But I find neither of these is actually helping. When I keep a strong eye contact to any people I'm not really close to (Eg strangers, friends, etc, boy or girl) I find it really uncomfortable and tend to look away before remaking the eye contact, which is extremely awkward. Any tips, or exercises, to allow me to get used to maintaining a strong eye contact?