You have to check this guy out:
Journey of an Absolute Rookie: Paintings and Sketches - ConceptArt.org Forums
He started a thread on conceptart.com when he started his journey to draw and keeps posting even today. checkout the first few pages and then the last few... you will be amazed.
He draws every single day (indeed because he likes to do so) If this does not inspire you i do not know what will
but just a case you need more:
image*after forum: my painting link list
i made a post about digital painting on my website. Hope it helps