I lost my mother this past September. I didn't pick up any bad habits but i can say that my relationship with my family has really been changed. There feels like an elephant in the room whenever i speak with my father, aunt, grandmother, cousins, etc. I don't get all worked up over little stuff anymore either. I try to enjoy life more b/c i seriously realize how precious those little moments are and how irreplaceable they are.
If you've lost someone, especially a parent, I truly empathize with you. Silly moments in movies will tug at your heart unexpectedly, and stuff will bring tears to your eyes with no warning. Songs that meant nothing to u before will be the most impactful things ever. Yelawolf's "Have a great flight" is a guaranteed tear jerker for me b/c of how closely its words matched some of the words my mother's pastor spoke at the funeral.
Stay strong, keep ya head up, and make ur loved ones proud.