What does "feeling like your life is over" mean and why is it not in any dictionary online?

Read also:

• Why does the UK Labour MP Jess Philips seem to be such a divisive figure?
• What does it feel like wearing tights?
• What type of sex do women prefer, oral, anal, or vaginal?
• Why do some people hesitate to say 'I love you' even after their partners have said it first? How can one interpret this behavior from their loved ones?
• If sea levels were rising, wouldn't the acreage of coastal salt marshes increase? Are they?
• Why do trans people get so deeply offended when a stranger misgenders them, especially when it's a first encounter? I've been socially transitioned for 4 years and it just feels like a waste of energy to be so hurt by it.
• I’m a 25 year old teacher teaching at boys school & I have colleagues younger than me. I caught one of my students telling her he wanted her as his teacher instead & it hurt my feelings. They compliment her a lot. It makes me jealous. What do I do?
• What were the first few days, weeks, months and then years like after finding out about your spouses infidelity? How did your feelings, and yours & their approach to the situation change in the immediate aftermath compared to later down the line?
• When do you feel most peaceful ever?
• What happens if a parent refuses to let their child be transgender? What happens if the parent tries their hardest not to allow their child to be trans, like flushing every bottle of their trans child's HRT down the toilet?
• When was the first time you suck on a penis?
• Hillingdon heraldic designer appointed MBE for royal cypher - BBC
• If James Bond is meant to be the best secret agent in the world, how come all the bad guys in the World seem to know who he is?
• Why doesn’t the UK change their flag?
• What was the most inappropriate thing your parent caught you doing as a teen? Was in the bedroom, I thought nobody else was home. My sister and I shared that bedroom but I knew she was gone. I didn’t know my dad was home though.