tax refund/401k

[bill123]

I have a couple of questions and hope someone can help with the answers. First,im figuring my average monthly income and dont know if i should include my 401k that i just closed(1300-)stocks sold(1700)and tax refund(1100).If I do include them,Should I divide the above figures by 12 considering i dont receive the above amounts monthly?Also, I made a mistake on my tax return and listed myself as head of household instead of single,Ill be sending amended tax return soon.Will the fact i made a mistake on my return ,hurt my chances for filing chapter 7 and getting a discharge?