Painting everyday is difficult when you are travelling and there is reasons why. If you are an oil painter and flying to your destination your paints can not travel with you - combustible material. A busy schedule also interferes with finding the time - unless you become anti-social.
Since I've programmed myself to paint I had to find a pacifier - drawing. For less than 10 bucks I purchased a sketchpad, pencils, pencil sharpener, and eraser. What I discovered was through painting my drawings have improved and once again I found joy in sketching.
Sketching is less expensive and if you don't like the way a piece is working out, you can either erase it or turn to the next page. I'm using it to work on composition, contrast, and perspective, which are three extremely important attributes to a successful piece of art.
Composition is noticed first. The work must be constructed to draw attention. If the placement of objects is boring than the other two elements don't matter. If a picture has composition then perspective becomes important. The human eye can find those elements where the perspective is not correct. The eye assesses each element to the brain's database of objects, then determines if what you're viewing makes sense. If perspectives are off the painting looses interest.
If the first two points are correct then contrast between objects becomes important. Contrast between light and dark brings a piece to life; without it a painting is dull and looses interest.
To produce an interesting painting follow the three steps and the number one rule of art, "No two things in a painting should be the same or alike.", which includes shapes, size and color.