You should always practise your craft, wether that be writing or photography. With this in mind I make it my business to always have a project in hand. My Random Acts of Cinema project is something I’ve been working on, on and off, for about 10 years.
With it I film stuff around me wherever I might be and try to cut it into a random piece of ambient cinema. Once they are done I upload them to a playlist on YouTube and gradually the overall thing gets longer and more complex.
MAKE SOMETHING TO PRACTISE YOUR ART EVERY DAY, NO EXCEPTIONS.
If you want to write then write, if you take pictures have a camera on you at all times, if you make music then at least record a little idea or doodle every day . . . you see the pattern. Draw and paint, make music, write, make photos and films. Do it every day. You will automatically get better and better all the time.