When you meet someone better than yourself, turn your thoughts to becoming his equal. When you meet someone not as good as you are, look within and examine your own self.
Take hold of your own life. See that the whole existence is celebrating. These trees are not serious, these birds are not serious. The rivers and the oceans are wild, and everywhere there is fun, everywhere there is joy and delight. Watch existence, listen to the existence and become part of it.
"We will wait," answered little Alice, taking Nettie's hand in hers, and looking up to the sky, "we will wait - ever constant and true - till the times have got so changed as that everything helps us out, and nothing makes us ridiculous, and the fairies have come back. We will wait - ever constant and true - till we are eighty, ninety, or one hundred. And then the fairies will send US children, and we will help them out, poor pretty little creatures, if they pretend ever so much."
Whether you believe in God or not does not matter much, whether you believe in Buddha or not does not matter so much; as a Buddhist, whether you believe in reincarnation or not does not matter so much. You must lead a good life.