The co-founder relationship is as complex and difficult as a marriage, and it takes conscious effort to sustain it. So if I can give one bit of advice, it's to

The co-founder relationship is as complex and difficult as a marriage, and it takes conscious effort to sustain it. So if I can give one bit of advice, it's to expect to have to work seriously on the relationship. Some resources well-regarded by YC founders are https://www.helloinnerspace.org/ https://www.helloinnerspace.org/ and https://www.foundercoach.io/ https://www.foundercoach.io/