one of the difficulties in making a socially normal amount of eye contact with people is that if it doesn't come naturally to you but you're willing to try, you can accidentally make a little too much eye contact and great, you just changed everyone's first impression of you from "unfriendly" to "might be planning to eat my bones"
no! come back! I don't eat anybody's bones! I was really just looking at your forehead anyway!
Unless I expend conscious effort, I have two modes: never looking at you, or a relentless, unceasing stare. The middle ground takes enough effort I might lose track of the conversation, sorry about that