SimchaMinute by Rabbi Avigdor Miller
Some people think there’s no use trying: "That’s what I am! I am a moody fellow, I am a hot tempered fellow, I am this, I am that."
No, you have free will. You have the ability to control yourself. You can change yourself. And Hakadosh Baruch Hu is not merely telling you you have the choice, but He’s commanding you u’vacharta bachaim, choose life. — Principles of the Torah (#E-20)