It's when you grit and bear through the things stressing you out. It's when you keep on keeping on MINUS those angsty nerves, crippling fears, and the other stressful crap holding you back inside. It's when you trash those sour nerves and stay focused to keep moving forward!
Girl: Umm... I-I don't know if I can go back to s-school... It's too hard--
Boy: Woah! What are you saying? We ALL have fears inside, but you need to know that you can power through them! Use that DETERMINATION and keep pushing forward! Know that YOU CAN DO IT!
Determination is hardened focus. It's when you are absolutely set that something will fly through exactly the way you are mentally picturing it, no questions. No doubt.
The doctor said that this disease would take me out. Tch! No way! I WILL overpower this ailment. I WILL continue to live my life on MY terms! I will NOT back down, EVER! My inner voice just does not accept me dying early, and I agree with it! I am filled with DETERMINATION and I will not fall short, I guarantee!