Who can tell me how to say "纠结" in English?

Question

Answer

definition:  intertwined / twisted / tangled / confused

To undo or loosen  (a knot or something tied up).
解开 解开 或 松开 （一 个 绳结 或 纠结 在一起 的 某物 ）
Confusion or complexity;  a tangle.
纠缠 纠结 不清 ；复杂 ；混乱 ；团 在一起 的 东西
To entangle or catch  (a rope, for example)
纠结 使 缠 住 或 绊住 （如 绳子 ）

Answer

纠结=  Entangled ,to twist together or entwine into a confusing mass,to complicate; confuse.

Answer

Considering the latest meaning of this "纠结" has changed from its original gist in practical use, I would prefer "dwell on" for its cloest translation.
For  instance: 
Do not dwell on those you can't change, just accept and make peace with them;
I'm still dwelling on if I should go and confess to her about what I feel for her.

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