You’re grateful when you’re aware of what you have rather than what you don’t. Mindfulness is the starting point for gratitude. Without mindfulness, you can’t be aware of all the things that are going well in your life. A grateful person is therefore a mindful person. Mindfulness with gratitude gives a sense of being more fully alive.
With practice you can develop gratitude the way you can with any skill, such as cooking or learning an instrument. The more you practice, the easier feeling grateful becomes. The more grateful you are for everything in your life, the more things you find to be grateful for! You begin to notice more and thereby strengthen your mindful awareness.