I'm not going to lie to you, Vegeta, although the answer may be difficult for you to hear. This is the truth. Goku devoted his life to protecting the lives of other. Because of his selflessness, when he died, he was allowed to keep his body and travel to King Kai's Planet. You, on the other hand, have spent your life in pursuit of your own selfish desires. You've caused too much pain. When you die, you will not receive the same reward.
You never thought to kill, or fight for revenge. Only to test your limits, and to push yourself beyond them, to become the strongest you could possibly be. How can a Saiyan fight like that, and at the same time be so gentle that he wouldn't hurt a fly? It makes me angry just thinking about it. But perhaps it is my anger that has made me blind to the truth for so long. I see it now. This day has made it all too clear. You're better than me, Kakarot. You are the best...
Yamcha, I was worried about you. For all I knew, you were dead in a ditch in a country you can't pronounce. You'll have to make this up to me. And you're going to enjoy it.
But, you will not go in there with hopes of winning the tournament the first time you compete. To do so would be arrogant! And arrogance is for fools, not warriors! So you will enter the tournament with the sole purpose of improving your fighting skills.