Terraria: Hellstone Mining Lifehack

To begin, you'll need an alchemy station, which can be done by simply placing a bottle on a table. Then you need to collect the following: 1 Fireblossom, found in Hell, 1 Waterleaf, found by the ocean, and 1 obsidian, obtained by touching water with lava and mining it with a pickaxe with at least  65% pickaxe power. Craft these together and you get an obsidian skin potion, which will protect you from all lava damage. When you mine Hellstone, you will be greeted with lava, so use this when mining it. Also, I'd recommend crafting an obsidian skull to protect yourself from the "Burning" debuff.