If some decisive objective data shows that a project is declining and is irreversible in the long run, then you must change your approach and no longer regard it as your long-term investment object.
You can sell it decisively, and you cannot let the "sunk cost psychology" distort your judgment, because this will make you actively block the negative factors and over-amplify the positive factors that are not enough to reverse the situation.
On the contrary, if objective data shows that a project is full of vitality and can bring tangible benefits to the project parties and users, then don’t be overly sensitive to short-term fluctuations in currency prices. You should use your own insensitivity to overcome it.
