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.