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obsessive
जुनूनी / धुन का पक्का
thinking or worrying about one specific thing so much that it becomes unhealthy or extreme.

“Arjun has become quite obsessive about his daily step count, checking his fitness watch every few minutes.”
अर्जुन अपने रोज़ के कदमों की गिनती को लेकर काफी जुनूनी हो गया है, वह हर कुछ मिनटों में अपनी फिटनेस घड़ी देखता रहता है।
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