My partner never appreciates me for anything that I Do. Only complains or critical feedbacks on what wasn't good or where I missed ..
It leads to self doubt. Sooner or later, lack of feedback will make one feel like they are not good enough and this is what leads to painful thoughts that in many circumstances can be the causal factor behind mental health issues as serious as depression.
We also try and help through couple sessions, overcoming of this lack of appreciation, this feeling of not being respected for all that a partner does and address it. Because for healthy relationship, one needs to be valued, respected and cherished for little and large things that people do.