Imagine you have a pirate's treasure map, or you're playing Minecraft and need to find diamonds. Do you find the diamonds or the treasure right there on the grass, easy? No! You have to dig, search, use the shovel and the pickaxe. It's work, but when you find it, you get rich in the game!
The Bible says Wisdom (learning God's things and the right things in life) is just like that diamond. Being lazy won't cut it. You have to "dig": read the lesson carefully, ask questions, pay attention at church. Whoever's lazy just finds dirt. Whoever "digs" finds the treasure!