Overthink
sceftome kati para poli analio kati ipervolika
In Greek Σκέφτομαι κάτι πάρα πολύ; Αναλύω κάτι υπερβολικά.
To think about something too much; to analyze or consider something excessively.
Example
"Try not to overthink the exam; just focus on what you know."