Quit watching television. Staring at an electronic appliance is not inspiring, regardless of what others think or say.
Read good books. Forgo the genre fiction and read classics, literature, plays and poetry. Indulge in a wide variety.
Listen to audiobooks.
Listen to and read author interviews.
Carry a notebook everywhere. This is not just for ideas, but whenever you have time, take it out and write a description of everything around you. Watch people and speculate about them and write that too.
If you can manage it, write every day. In addition to any project, free-journal. Write out your feelings, fears and beliefs.
To me, the most important thing for a writer is to know who they are. To be able to produce anything good, you must be able to put your identity into your work.
Most of all believe what you write.