Need advice/info pleaaasse??

My mood has been changing a lot recently and I dont know if it’s normal...

One example if that yesterday I was so anxious about going to work that I was actually prepared to kill myself and today I feel fine about work and I’m tempted to take on more hours!

Another example is with people, I sometimes get kinda obsessed with one person and I admire them so much that I can’t even look at them because it makes me hate myself...but then a week or so later I may hate them and think the worst of them.

My mood can sometimes change within minutes and it’s very confusing.

I’m not sure if anyone else experiences this but I would really love to know if it’s normal, or what it could be?