Is is obvious?

I have a lot of stuff. It isn't covering every floor space and my house if mostly functional, but you can hardly move around the basement or garage.

The dining room and kitchen tables are unusable, and our bedroom is so messy that there is a path around the bed and that's about it.

I get anxious when anyone gives us anything because I feel like we won't have anywhere to put it and I don't like when the kids get birthday presents because I feel it will add to our clutter.

I have no idea where to start in cleaning up. On top of everything, I feel like my husband has hoarding tendencies too. He has been diagnosed with OCD and anxiety and I with bipolar and anxiety. I have problems with social anxiety and agorophobia too. I am embarrassed to have people over. Our main problem is not having anywhere to put things and we live by a "let's stick it here for now" mentality. We have bills and junk mail/magazines everywhere.

I want a nice place to live, but I just don't know where to start.