This is meant for designers, but might as well apply to many more disciplines.
If you’re stuck doing work that you don’t like, the good way out is doing the work you would like to in your free time. And making that visible.
Want to design apps and stuck with corporate websites? Design an app of your own or redesign some well known one.
Are you known for a certain style of illustration and get commissions for that same style on and on? If you want to switch, start creating different illustration and show them off.
This was also a recurring theme at one design conference — OFFF 2013, BTW.
It is only natural if you think about how customers discover you.
Don’t wait for that special new project to come in. Start one on your own.