When you are depressed, you can be filled with anxiety, the feeling of guilt and loss of hope.
"When you are depressed"=「鬱状態でいるとき」
(または、"When you are suffering from depression"(うつ病で苦しんいるとき)という言い方もできます)
"you can be filled with"=「(頭や心が)~でいっぱいになってしまう」
"anxiety"=「不安」
"the feeling of guilt"=「罪悪感」
"loss of hope"=「絶望感」