Being taken seriously for promotions. What "fatal mistakes" one should avoid?

I'm not the wisest person in life. Often I end up shooting myself in the foot. For example, I may be too honest and share too much about my personal life such as struggling with anxiety issues. Another one would be "adherence" metric, can really screw you over big time. Lastly, if your manager asks for you if you're comfortable to "train a newbie" and you say "not really", I can almost assure you they will be less willing to help you out for a better role.

Based off your wisdom and experience. What are some mistakes to avoid in order to not screw yourself over in a call-center if you want to be taken seriously for being considered for a promotion in the future.

Share some personal tips or observations you've learned over the years.