The first thing you might think about is whether you actually enjoy having lawns, do you use them, enjoy sitting out on them, or are they more of a chore, keeping them at a certain level, which is more effort that is worth while in my opinion. So perhaps you could have a walk around your area , looking at gardens in your locality, and seeing what you like and what doesnt appeal to you. So then another point is do you want it all as a lawn at a same height or might you choose to have an area where you allow the grass to grown longer and perhaps have a variety of grasses to enjoy, which would also be better for the wildlife.Even if you decide you want a uniform height and style of lawn, might you make perhaps an island bed or a pond area to give a variety to your garden. With more variety, you will have a wider interest and perhaps try out some different plants. So rather than seeing this as a disaster, perhaps you could look around and see what sort of gardens you enjoy and perhaps move over a little to that. If you have some lovely gardens or a good gardening club close by , they would be the people to give you good advice as they will know and understand your soil and the ph, and this will affect what you grow well. I would take a couple of photos now of the garden as it is , and then when you have decided what to do and enjoyed restoring it to a place you like to be in you can look back at todays photos and be glad you had the chance to change things. Enjoy it