SAHMs of only child…

How do you balance your life? Has your kid become like your whole world? I’m worried I’ve lost myself into motherhood, and that it’s almost worse just having one child versus two or more because that one little person has basically totally consumed me! I absolutely adore being my sons mom but I’m wondering if I’m going to struggle later on when he grows up and not know who I am anymore! Am I making sense to anyone and do you have any thoughts if you are in a similar position?