The truth is, we are the result of the choices we made. You wouldn't be sitting on that desk on your hopelessly dull office if you decided not to come to the interview several months ago. You wouldn't have a purple hair if you didn't tell your colourist to do so. The truth is, bitter as it seems, you are responsible for your own (un)happiness. It's not always destiny playing dice on you, no. Sometimes it's you sabotaging your way into happiness, and nobody else is to blame for it. You can be manipulative to yourself, you know? Sometimes I lie to myself in more times than I am being honest, and if that wasn't a depressing enough fact, I don't know what is.
Being true to yourself will set you free. It will give you a good night sleep. It will send you to a nirvana of sweet dreams. It will give you the chance to make friends with yourself. Isn't that nice to hear? To know that you haven't ruined your life beyond repair?