We have different lifestyles so it's a difficult problem.
Because we both have different lifestyles, it's a complicated issue.
ご質問ありがとうございます。
・「We have different lifestyles so it's a difficult problem.」
「Because we both have different lifestyles, it's a complicated issue. 」
＝「お互いライフスタイルが違うので難しい問題です。」
（例文）We have different lifestyles so it's a difficult problem, but we have to talk about it to find a solution.
（訳）お互いライフスタイルが違うので難しい問題ですが、話し合って解決策を考えなければなりません。
お役に立てれば嬉しいです。
Coco
日本 
