It took me almost 22 years to realize how incredibly untrue that statement is. Untrue, inaccurate and hurtful. I stumbled upon it while in some dark corner of the internet I should've never been in and felt haunted by it.
I spent a lifetime with jaded anger as my default setting in life. A pessimist, hopeful, but always feeling justified on the negative side of the spectrum. On top of that, I had days where I inexplicably woke up and felt like utter, useless garbage. Again, it took a very long time for me to even recognize that not everyday was the same and those varying emotions I woke up with had much more control than I did.
These last few months have been the best ever in my head, for the longest, most consistant amount of time. I have no idea why. I'm not in control of that and I don't forget it. I had times where I struggled to do what this terrible little meme is suggesting. I tried to just be happy and what made me feel even worse was not being able to since sounds so simple. While I'm at it, hey pancreas, start making insulin, would ya? See, it's not that simple to get all the parts of your body to work the way other people's might.
Just a reminder that you don't know what is happening in someone else's head and you may not understand it. You may not know the effects it has.
If it were so easy to "make the choice" to feel joyful and splendid everyday we would.