That's right jonboper, money can not buy the experience and skill that comes from deliberate practice.
BUT, strategic spending of the money your budget allows for will definitely make your deliberate practice more productive and the experience more easily gained. Sometimes even a tiny bit of money invested in a new "toy" can spark new creativity as well.
You would be shocked at how much a even a single blowout-priced Auralex treatment set will improve your mixing environment (Musicians Friend was recently selling a discontinued set for about $129) or a even a $30 investment in a book (like Mixing Secrets) can fine-tune your deliberate practicing and almost overnight noticeably improve your skills.
If you really do have NO money, then you are absolutely correct. Do the best you can with what you have and above all
HAVE FUN DOING IT!!!