Depressed over life situation?

Hello,

Let me first start off by saying thank you to anyone who has taken the time to read my post.

I am a 25-year-old single male who feels like he has failed at life and has become the definition of a bum. When I turned 22 years old I started working for a Fire Department in Georgia before realizing that I wanted to pursue a degree in nursing. Long story short my school schedule was interfering with the work schedule so my job at the time fired me. I had 21 grand saved up at the time so I bought a car while working at the fire department. Had it all paid off and then I ended up crashing it. The car ended up getting totaled and I was lucky enough to get all the money back that I paid for it. Fast forward to me starting school for nursing. All the money I had saved up which was 21 grand ended up getting spent for school. It left me with 5 grand in the bank and right before I was about to start the nursing program my parents notified me that they were putting the house up for sale so they can move to PA. My parents recently just sold the house and now we are currently moved in with my grandma at her place until my parents find a place in PA.

I started paramedic school about four months ago and will not graduate until February 2020. I’ll be twenty-six at that time. I am currently working one full-time job make 24 grand a year post-tax and second job part-time making roughly 20 grand a year pre-tax. Overall I am making roughly 33–36 grand yearly as a 25-year-old. I am still living at home with my parents but once they move I will be taking over my grandmas house which is mortgage free. All I will have to do is pay for utilities. My plan is to save up as much money as a can in 5–6 years so I can move out and buy my own place. I work about 96 hours a week currently right now while attending paramedic school once a week. I am working very hard but barely making anything. I feel like such a loser and that I have let my parents down. Both my parents are five years away from 60 years old and I am the oldest kid out of three. I have a 24-year-old sister and a 21-year-old brother. My sister is getting a masters in some art degree and my brother’s plan is to get a software engineering degree but all he does is sit home literally all day and play video games. I HATE IT. It makes me extremely depressed knowing that my brother and sister will most likely not move out anything soon and that my parents will still have to deal with this. My parents should not have too. My dad worked so hard for us kids that this should not even be an option. I am grateful ill be lent my grandmas house to stay in for a few years to save up money but I am extremely worried about my brother and sister too. To me, they look like they will end up like complete bums for the rest of there life. This thought and mental picture scare me to death. I don’t want this and I do not want this for my parents. I want them to live on there own and enjoy there life growing old and not having to worry about two kids still living with them. Honestly, this makes me tear up a bit even writing this. My dad’s dad who is grandpa recently died of Alzheimer’s and now his mom who is a grandma just had a mini-stroke. My dad is under a lot of stress and he just shouldn’t be and i hate that for him. If my parents are not happy then I am not either. I feel like failure and loser.

My 10-year plan was to save up as much money as can while living at my grandmas by myself in five years and then use that possibly 100,000–180,000 grand to pay off a house or have a really nice down payment. Then I was going to bridge from my paramedic to my nursing. This all sounds good for me but then I am extremely worried about my sister and brother. Am I being too hard on myself or am I really just a loser who has failed?