Your gut health is more important than you think. The second biggest brain-like organ is your gut, which is the home of the enteric nervous system.

Apart from that it isn't only about digestion, improving your gut health has many benefits.
The benefits of improving your gut health
Let's keep it short:
- Better neurotransmitters: 90% of your serotonin is produced in your gut.
- Less inflammation: Say goodbye to acne, bloating, fatigue, etc.
- Many more downstream effects: The list would be too long, some of them include improved insulin sensitivity, skin clarity, energy and vascularity.
Fundament
- Stop eating garbage: Just stick to a basic balanced non-processed diet. Giving yourself "treats" from time to time is a weak mental construct you should drop. Health above everything, let this ring in your brain like a mantra.
- Higher protein intake and more fats, balance that based on your goals.
- Increase your water intake.
- Sleep: 8-10h daily, same sleeping pattern to improve your circadian rhythm, be strict to yourself.