If you want to learn to draw, you need to draw every day for the rest of your life. Get a sketchbook and fill at least one page every day.
Drawing outlines is bad advice. Start by drawing the forms and then gradually add details later. Things don't have lines, they have volumes. They exist in a 3-dimensional space.
Draw from life. Go outside and draw cows, dogs, people, whatever. Go sit in a cafeteria and draw people eating, conversing, etc. Take figure drawing classes.
You will suck for a year or two, but if you need motivation, just look at what you did a month ago.