The Last Laugh
Answer: The Chafetz Chaim compared your situation to the rookie businessman who was greeted with laughter and mockery by the seasoned merchants when he brought his goods into the marketplace.
The newcomer ignored their warnings that he would never be successful in his undertaking. He continued with determination and eventually became a very prosperous businessman. He indeed had the last laugh at those who mocked him.
In the same manner, concluded the Chafetz Chaim, a Jew must pay no attention to those who make fun of him for living a Torah life. This world is like a marketplace and whoever studies Torah and does mitzvot will earn great profits in the World to Come. There he will have the last laugh at those who laughed at him here.