If you want to have a happier mindset or just be in a better mood, try this pretty simple exercise. Every day write down three positive things that happened to you in the past 24 hours. It could be anything that gave you even the slightest of a good feeling. Maybe your pet greeted you at the door, you made a delicious meal, you passed a test, met a goal, got the front parking spot, etc. The objective is to be aware of and reflect on the positive events in your life. You might not even realize the amazing things in you life, until you right them down. Little things can make a big difference. Notice the sunrise or sunset or the beautiful color of the sky.
Think about children and how much joy they have for little things. I saw a child (maybe 3 years old) the other day throw her arms up in the air and run to her friend when she saw her, all with a big smile and laughter. It brought such joy to me to watch and I thought, when did we stop getting expressing our excitement? When did we stop finding such joy and excitement in life? We might not get back to that exact expression as the child, but we can start noticing the sky, birds, flowers, a breeze or whatever it might be and be happy that we experienced it. Find your joy, make it happen. You can do it if you just try.