How do I sleep better and lower my stress

Start small: a couple of minutes of breathing before bed and regular movement during the day. That does more than trying to rebuild your whole routine at once.

The Mindfulness section has ready practices for different states — calm, sleep, energy, focus — plus meditations, lectures and podcasts on handling stress.

You can build practices to suit you: your own rhythm of inhale, hold and exhale, and a background sound. Set it up, breathe for two minutes, and you're a different person.