I think there's no need to explain how gratitude can increase our happiness. The equation is very simple, but it's not a common practice. If we practice focusing on what life gave us we can find thousands of reasons to be happy. No matter how much struggle we are facing, no matter how much pain we are in; we always can find things that are enough to feel thankful.
But the thing is, we don't always think and act like this; do we? That's why practicing gratitude comes first if we want to be happy. You can find happiness here and there and do this or that but this is the simplest yet useful hack to be happy. Be grateful for what you have. Let's talk about some of the easy things we can do to practice gratitude!
You can start this practice by noticing others life, especially who are suffering and struggling financially, physically, and mentally. There's no need to compare, just noticing this will make you find a thousand reason to feel blessed.
Take gratitude challenge. Write down things you are grateful for, even if it's just a flower that made you happy the other day.
Practice to appreciate and say thanks. It may not sound much but this practice helps us to feel thankful for what we have,
This daily life practice gives us a moment to think and reevaluate our life differently. And for sure, it increases positive vibes in life, relishes good emotions, and thus makes us happier. You see, we don't actually need to have this or that to ensure happiness. Only changing our perspective and practicing these simple things can do that.
I guess now you get the answer to your question, how a minimalist feels so happy inside out. So, what are you waiting for!