First, I feel like your position as white here is fine.
But if you're feeling bottled up, consider the 3.e4 lines of the QGA, which is what I assume this is (except with e3 instead) given the pawn structure. Lots of open lines for your pieces in the e4 lines. Your opponent's too, but that's the price of admission.
I love to use the Queen's Gambit, but sometimes during the middlegame, I seem to have my major pieces "stuck" by the opponent's pawn on c4 or by the extensive development going on everywhere. For example, here's a game that I'm doing now wher
e I feel sort of stuck:Does anyone have any ideas on how I should try to play future games? Or am I just not as good at closed games if I feel like this? Thanks for the suggestions!