[31 M] & [29 F] Trying to build daily routines together keeps ending in “weaponised nagging.” What actually works?

Context: I’m 31 M, partner is 29 F, dating 18 months and living together.

We keep setting small shared goals… stretch before bed, no‑phone breakfasts, etc… and one of us inevitably slips. The other starts to remind (read: nag) and the vibe turns sour fast.

My questions:

1. If you’ve made joint habits stick, what specifically helped?

2. If it failed, where did it crumble first—uneven motivation, schedule clashes, resentment about “policing,” something else?

I’m looking for real‑life stories or tips so we can stop turning tiny goals into big arguments. Thanks in advance for any wisdom!

TL;DR: 31 M & 29 F, together 18 mths. Shared habits keep turning into nagging. Looking for what made it work, or fail, for you so we can improve (and spare the relationship stress).