Wow!!! My Garden is going crazy.

I thought I had a black thumb but this years rain along with the animal manure and compost has made for huge green plants. My tomato plants are ginormous and just starting to produce fruit and many flowers. All the plants are huge and green. The squash is taking over. Lots of pumpkins, zucchini, spaghetti squash, swiss chard, peppers, cabbage one beautiful head of cauliflower. I want to trim them back. I feel like everything is too big and I am finding it very hard to get into the garden to harvest things. SOMEONE HELP!!!!