“I overthink everything”

What could be going on

Rumination and worry: Repetitive, hard-to-stop thinking fits; check whether it solves anything or just loops.

Generalised anxiety: Worry across many topics most days for months fits; check for tension and poor sleep.

Replays conversations for days: Fits if the loops are mostly replaying what you said; check how long they last.

Catastrophising: Fits if the thinking runs to worst cases; check how often the feared outcome happens.

Intellectualisation: Thinking can be a way to avoid feeling; check whether a feeling sits underneath.

Sensory processing sensitivity (highly sensitive person): Could be a deep-processing temperament; check whether you also notice detail others miss.

Also said as

• my brain never shuts off
• I analyse every little thing to death
• my boyfriend overthinks every text
• why can't I stop thinking
• I go round in circles in my head
• I can't switch my brain off