Stay strong and keep on!
Rather than - "I can't afford it", say to yourself "I don't need/want/ it".
That way even when you can afford it, you would not want to do it.
Stay strong, the first days are the hardest, we all know it and I know how it sounds but - it will pass! And you will feel good!
Keep us posted - you can use this thread as kind of a journal. Write whenever you need to/want to. Even if it's rambling and etc.
Good luck and congrats on Day 2!