Kinda like someone saying “my handlebar feels too low, how do I change it” in which case my initial reply would be “why does it feel that way to you?”. Do you have pain, how long is your stem, what position do you normally ride in, etc.? 
Does “feels too high” mean you doubt the LTP value is legit based on what you think it should be or does it physically feel that way during workouts?
As @wescaine mentions it’s a calculated figure dependent upon your signature. That’s why it’s grayed out under Account Settings, Profile and elsewhere. Settings for decay method and IR are factors. Also note LTP is not your all day power.
Here’s another discussion: LTP questions