If you have art block, I would suggest buying a mini sketchbook. it really worked out for me. The last big piece I did in my normal sketchbook took a toll on me, so I went and bought a mini sketchbook. not even a month went by, i filled up more than 10 pages of messy but good enough sketches that I am proud to see. 

Here's my favorites I've made in my sketchbooks this year: