Crafted the stone pickaxe, can't mine anything... energy use is kinda high
You need to equip the tool you want to use in the equip menu I do believe. Energy use is acceptable considering you can just sleep whenever you need. The second thing is you can consume food by simply eating your crop or making better food in the kitchen. This will provide you extra energy for the day and a side benefit of nutrition for the core of the game. Also, just by doing stuff you should have seen your maximum energy goes up.