Help with getting creative?!

Hi everyone. I’m finding quite difficult in my middle 30’s to get creative. Especially being back in Uni studying graphics surrounded by 18’s, 19’s old guys fresh of collage. I know once younger creativity wasn’t a problem however now it’s just doesn’t come as easy or at all. I know graphics is something I want to do and something I enjoy. I do sketch but not as often as I should. I am beginner in photoshop, in design and illustrator as well. Wonder what the problem is. Whether it could be my age and gap I’ve had from designing (primary and college school - 15yrs ago lol) or its lack of skills in mention above graphic softwares. Any advise will be really appreciated.