It has been the opposite for me... I believe I'm more creative now than any other time in my life...
What helped me was letting go, and accepting / embracing my limitations...
I no longer dwell on, or worry about anything beyond my control...
Try not to get bogged down in minutiae, and don't try to keep up with trends, fashion, and technology... I try to do what works, while dabbling in what doesn't...
btw, I don't recommend the above for anyone else, at anytime, for any reason...
just sayin'...