我想我会一直孤单！一辈子都那么孤单！但是，我已经习惯了孤单。

I think that I will go on being lonely! Being so lonely all my life! However, I have been used to loneliness.

youdao

他一直是个被排斥的人，无人理睬，孤孤单单。

He had always been an outcast, unwanted and alone.

《柯林斯英汉双解大词典》

我们应该分辨情感和事实，这是何等快乐的一回事：当魂感觉孤单凄凉的时侯，我们的信心仍能说：“我看不见你，我觉不到你，但是你始终在这里，所以我一直是这样的我。”

Distinguish between the fact of God's presence, and the emotion of the fact. It is a happy thing when the soul seems desolate and deserted, if our faith can say, "I see Thee not."

youdao