Draw It Yourself Books
These Draw-It-Yourself will give you hopefully the same feeling I get when drawing my portraits. Think of it as a small hand-drawn maze or a one-line rollercoaster into calm, with a portrait waiting at the end.
The book contains more than 30 portraits to explore. After drawing them, you can add color if you like (no rules, no one-line pressure — go outside the lines if that feels good). Available as a book or digitally, just download and draw!