It sounds like GAL'ing and detaching might actually help you in your sitch (needy). Show your wife that you can give her the space she needs. GAL'ing for me centers around a few things:

1) Making my bed every day.
2) Trying to cook as much as possible when I'm by myself--instead of going out to eat.
3) Exercising.
4) Calling at least one friend or family member every day.
5) Meeting up with friends/family members more often.
6) Planning and going on more vacations.