Overwhelmed and feeling angry

Hello,

I’ve been struggling with my current job as a bank teller I’ve been at for 2 years. The daily interactions with very needy and rude members 8 hours a day. Then after work I go home and help take care of my grandparents. I’ve lived with my grandparents for 9 years and the last two my grandpa has come down with dementia. He’s always irritated and gets yells about little things which is understandable with his mindset. My grandma is getting run down and so am I. Since I live with them most of the responsibility is put on my compared to the rest of my family.

I’ve been noticing the last few months my patience’s has become very thin. I feel like I’m walking on ice with my anger. Going to work dealing rude/ demanding clients then going home and having the same thing. I come home some days irritable and walk through the door to someone saying I need you do this or need help with. I feel like I’m going crazy most days. I’m switching careers because of this to something less stressful and I can feel more accomplished about what I do rather then being bossed around by clients.

I don’t know if this feeling is normal. With all the responsibility I have and only being 21. I’m hoping switching careers will help. Any advice?