Healthy food

It's not just about what you eat but also about how and when you eat

mindful eating
intermittent fasting
food preparation
"Don't exercise, don't eat"

Healthy eating requires sufficient exercise. If you eat a very healthy diet but exercise little, then not all those nutrients are used to improve the quality of the tissues. Exercise ensures that all the good things are actually used.

Practical tips and links:

Chew very well! Meal = time to grind
Eat with a small spoon (or chopsticks)
Eat until you are 80% full. That last 20% will come naturally if you wait a while.
Just before your meal, do 30 seconds of intensive exercises such as squats, burpies or jumping jacks. This prevents sugar peaks in the blood due to meals. And with another 10 minutes of walking after the meal you complete your sugar regulation.
Sufficient sleep ensures that you can make healthier eating choices. If you have insufficient energy, you will easily look for quick sugars to experience an energy boost (this is a primal survival response). These are mainly found in less healthy products. With enough sleep you produce more leptin, which ensures that you feel full more quickly.
Start your day in fat-burning mode: don't have breakfast (intermittent fasting) or a low-sugar/free breakfast: (eggs, salmon, tuna, vegetable omelet, avocado, olives, nuts and seeds, etc).