Normally when things seem like they're at the point of breaking you it's probably on the brink of building you and helping you ascend to the next level of success. You just have to persevere and keep pushing. I know that this isn't as easy as you expected and it's demanded a lot more of you than you originally thought but I know you can do it! You're so close!
I hope this lights a fire under you and helps you push through today and work hard!