Mining is the ONLY way to get ores and diamond so do it and do it a lot with your big pickaxe untill it breaks and then make another one that is how u become the best miner YAH.
When you get stuff you will have a happy time. With your pickaxe.YAH
Your picaxe will be happy and mine faster and so you get more diamonds YAH
Beware there is a cave dweller called The Molie Men they will follow you and eat your picaxe. YAH