For me very good motivation to take photos everyday is microstock photography. Before I was strugling with few things - i like take photos everyday, but how can I use them? Are they only payload in my computer?
But later I found microstock photography where I can sell almost all my pictures that are created on my everyday life or training photography techniques. I think it is very good motivator that you can try any photo technique, lighting, subject etc and not only master your skills but as well upload to stocks websites and get earnings if someone likes them.
At the moment I am contributor of 6 stock agencies:
Shutterstock: http://submit.shutterstock.com/?ref=1865198
Deposit photos: http://depositphotos.com?ref=1756291
Dreamstime: http://www.dreamstime.com/register#res6959677
As an example I was having photoshoot with me client on food photography. Later I have plenty photos of it. I have asked if client don't mind if I would upload photos online and resell them. Actually all they want was food menu for the restaurant so they have had no issues if I could reused them. Actually those photos earn me more than client had paid for that assignment.
As well I like to upload all photos from me trips and journeys. If its good memories why they can't earn money too.
For me stocks photos is really good motivation to improve quality and try various techniques, as well there is no special content required so you can sell anything from nature to objects, jewelry, portraits.