Dharmaraj Yudhishtira kept talking about truth, but he did not have skill. When Lord Krishna came, he was the one who brought skill in him. Without the help of Krishna, he would not have won the Mahabharata war.
So truth will triumph, provided there is devotion and skill. If you want to win in society, you need strength and skill.
If you want to win in life, you need to have freedom and devotion. So these four things you need to have.
Freedom, first you realize that you are free. Then love dawns. Freedom and devotion. In bondage you will not experience love. By seeing yourself as free, only then will love dawn in you.