How do you stand up for yourself?

Standing up for myself was really challenging if, I'm used to letting others have their way. Or if I'm a people pleaser, once I trimmed myself down to suit everyone else, it was all too easy to whittle myself away; learning to stand up for myself is a way of ensuring other people respect me and don't try to push me around or manipulate me. Unlearning the old habits of self-effacement and gaining the confidence to stand up for myself didn't happen overnight, but my journey to improvement starts with showing my identity.

Last night, my girlfriend and I had a fight because I made a joke. She got offended and told me that "I don't ever want to see you again". This morning she still acted immature making threats toward me saying she'll block my number until I said enough was enough I stood up to her by stating:

"I'll tell you my location only if you stop your, nonsense and acting like a child. This has gone, on long enough yes I screwed up I accepted responsibility it won't happen again. We're both adults we're professionals enough with the fighting and the threats my nerves are shot. You either act your age or I'll block your number!

Once you're cooled off and you're ready to talk then I'll give you my location".