I don't think it is difficult to lead a life that is eco-friendly.
I don't think it requires an enormous amount of effort to live in an environmentally friendly way.
ご質問ありがとうございます。
① "I don't think it is difficult to lead a life that is eco-friendly. "＝「環境に良い生活を送ることが難しいとは私は思いません。」
② "I don't think it requires an enormous amount of effort to live"＝「生きて行くのに物凄い努力が必要だとは思いません」
"in an environmentally friendly way."＝「環境に優しい生き方で。」
ご参考に。
アメリカ合衆国 
