<human>: Hey Reddit.
I'm reaching out to get some much needed perspective on how to deal with my immediate family. This year has been tough. Here are some highlights: 

My brother who is now 32 years old managed in 3 short years to get fired from his job, mooch off my parents for a duration of almost 2 years, corner them into paying off his housing loans so that the bank doesn't reposess his house, get married, have a child, start a business all while crutching on my parents/siblings/friends for support. He is the prodigal child of the family but only in the needy sense, not the repentant sense and I can't help but feeling cheated by his patterns of abuse of attention, especially that all of this was happening in very formative years for me when I refused to ask for help, so as not to burden my parents even more.

My sister who is now 36 struggled with some deep self esteem issues for as long as I can remember. She got into a relationship 4 years ago with a man she adored but she was convinced didn't love her. As it's been my job since I can remember, I've talked her off the ledge for hours at a time, rationalizing, describing scenarios and outcomes, weighing decisions.

Last year I was in a very difficult position during which I needed a lot of help. I got none from her whatsoever and it only occurred to me at that point, how long I had been investing of myself to help her, genuinely and wholeheartedly compared to the treatment I was receiving.

They are both in better places now, my brother with the help of my parents/friends and my sister who is getting married next year - which I can't seem to be happy for due to the circumstances - and I still find myself in the same difficult position.

I don't want to resent either of them and want to get rid of this negativity because it is consuming me and ruining my relationship with them even more.

If you have any advice please share, I could really use it.

Can you give me the gist of the text in a nutshell?
<bot>: I feel bitter towards my older brother and sister for getting all the help they needed from me/my parents while I can't seem to get any when I need it.