"Screw you guys, I´m going home"

 Hi!
For the longest time, I had problem with saying No. Many people do. It´s worst for me when it comes to parties and other actions, not just because I´m people pleaser and usually an organizer of those night outs, but also because I hate being alone and the feeling that I will miss something eats me from inside. Yeah, with the way I mix jokes with my existential dread, I should star in a French new wave movie ☆ ～('▽^人).
Also, believe it or not, I used to not be asked out so often, so when a possible plan came up, I just rolled with it, even if I didn´t like the people or club involved. If you have a similar problem, believe me, it got better - first of all, I started to actually like some of those people. 
Of course, it took some time - like two months of getting drunk twice a weekend. Looking back, was it really worth it? Maybe, they are fun to be around. It depends on what you are looking for in life. It also showed me that I can be a little judgy - not every "jock" is a dick. Sometimes us alternative people can be mean to normies, but I´m not surprised. It comes from experience and it takes many others to unlearn.
Some of them however still seem like assholes, but sometimes, you have to face little inconveniences.
And second, I got to a better place. I used to have good friends who never went out (or couldn´t), and shallow-level drinking buddies that liked partying - now, since I´m in college, I have both of those groups and to top it off, good friends who are sociable. 
I´m going out almost every single night out, and I fancy those when I can study and sleep, so I don´t really feel like I´m missing something. Maybe it´s because I´m kinda done with love and crushes right now, but that´s another story. 
So yeah. I feel like I can just go home. But can I say it?

You know, I´m down for everything. As long as person inviting me is enthusiastic enough, I can go everywhere. After all, this is how I make friends. It doesn´t take that much to convince me when I don´t want to do something, too. 

It will be fun!
Oh, come on, we need you here!
That person you liked is coming ;).
Etc.

I´m weak, but I´m slowly getting better. This is actually reason why I´m never coming to a club just in two people - you can leave your friend alone there, even if they just got in with someone and you just sit there, tired and trying to get away from old perverts. (That was not a fun night.)
It culminated in me, yesterday, after all those boring nights where I hated myself for not staying home, saying simple words: "I´m not going with you guys, I´m too poor and tired."
We were already at house party and I knew it was not going to get better than that. I had fun, met people I didn´t see for like a month, and looked good, because I still came in my witch costume. I planned to leave my friends before the club and then go home, get some sleep, as I´m going to club today too, and I was already in other ones twice this week. 
I could pass this one. 
As the night got longer and people progressively drunker, the idea of me having a calm night got to their nerves. In a friendly manner, they started to argue with me, but I was adamant.
So then we got out of the house, helped Michal (owner of that apartment) throw away liquor bottles, and I found my keys. I was ready to stand my ground. 
My sister did however not. She pretty much blacked out exactly at that moment. This is how my character growth moment turned into a rescue mission - we had to get her home.
For some reasons, while the rest of the group took taxi, I, the only person with keys, had to walk home. This walk home had side quests, too, like helping a drunk girl find her boyfriend, but by the end, I got there. 
We put my sister to bed, which woke up our mom, and she wasn´t angry. Just scared. When I did this, she was pissed for weeks, but that was almost a year ago, so maybe she just accepted that we will do what we saw our dad do. 
She is fine, just embarrassed now, and I feel emptiness. I will have to wait for my big, assertive motive till the next time.