I reward myself after each finished pomodoro with one sweet. This makes me eager to start a pomodoro at any time, and I am now also stopping work to collect my

I reward myself after each finished pomodoro with one sweet. This makes me eager to start a pomodoro at any time, and I am now also stopping work to collect my reward once the alarm rings, and not skipping on break time anymore. This turned pomodoros into a thoroughly enjoyable experience. To keep this from being a tradeoff between productivity and rotten teeth I bought a selection of sugar-free sweets on the internet. After the habit was formed, I introduced a gambling element by always having six different kinds of sweets on display, some more desirable than others. A dice roll decides which one I get. This is to approximate a variable-ratio reward schedule which is known to make the habit more resistant to extinction.