Anyone with 4 boys is not lazy, it's hard work. I don't know how old your boys are, are they actually saying that or you think they think that? Children don't natually think that way, I mean, they don't analyze whether Mum or Dad are lazy. Children can learn to think like that if it's being said outloud but remember this... no parent can be lazy with four and it's easy for others to point fingers when they are not experiencing what you are.

How is your marriage, are you supported at all with your depression? No support is surely going to make you feel even worse.