You have three aspects.

Mental, spiritual, and physical.

Physical is pretty straightforward. Find an activity you enjoy and practice it. Some people want to dance, some want to run, some want to swim. There are hundreds of choices.

Mental. Learning how you learn is the key. Some people need to be hands on; some people can learn by just reading; others need a combination of different types of learning.

Studies have shown that writing with a pen [or pencil] is better than using a computer.

Spiritual. Meditation and mindfulness. Many people think they can't meditate, but anyone can do it. It's just slower for some folks. Even making yourself calm for one inhalation is a start.

Mindfulness starts with simple gratitude. Make a list of the things you are grateful for.