SAHM....how do you do it?!?

Francesca • Mommy to two amazing little boys!!
I'm a teacher and am only a SAHM for the summers. I have one amazing little 2 1/2 year old boy....and I just feel like I'm not enough for him! I feel like he needs entertainment all the time, and I'm just dying here! We go to the gym and he gets to play with some kids at the daycare there, plus I try to keep him busy with going to the library and doing arts and craft activities....but I just feel sooooo drained and just like I need a break....and I fell terrible about that! Please help!