Q: Why is it that no matter how hard I try, I still fail?

A: It depends on whose perspective you want to get.

A pessimist would say that your objectives are too high and unreachable. An optimist would say that reaching your objectives is simply a matter of time and distance. You just need to exert the required amount of effort to get you from where you are to where you want to be, given the right direction.

A pessimist would say that you don't have the necessary knowledge and skills to achieve your objective. An optimist would say that knowledge and skills are simply tools to reach your objectives. Anybody can learn new knowledge and gain new skills whenever they want. You may not learn as fast as the other person, but if you really try, you WILL gain those tools.

A pessimist would say that your efforts are fruitless and result to nothing. An optimist would say that even if you don't achieve your objectives now, you can use the experiences that you gained from that attempt in making better decisions and helping you achieve your objectives tomorrow.

A pessimist would say that your objectives are simply not meant for you. An optimist would say that you only fail when you stop trying.
This is definitely one of the best answers I have read on Quora:
"When Empathy hurts, Compassion can heal"
Read the full question and answer here.
Reading through Quora, I found this:

A woman's history of vaginal orgasm is discernible from her walk

Yes, it is a legitimate research done in Belgium. Complete text of the research can be found here. For those who are too lazy to read, here's the results part of the abstract:
In the sample of healthy young Belgian women (half of whom were vaginally orgasmic), history of vaginal orgasm (triggered solely by penile–vaginal intercourse) was diagnosable at far better than chance level (81.25% correct, Fisher's Exact Test P < 0.05) by appropriately trained sexologists. Clitoral orgasm history was unrelated to both ratings and to vaginal orgasm history. Exploratory analyses suggest that greater pelvic and vertebral rotation and stride length might be characteristic of the gait of women who have experienced vaginal orgasm (r = 0.51, P < 0.05).

Translation: Trained sexologists was able to correctly identify girls who have history of vaginal orgasm 81.25% of the time.

Please note, however, that the sample size was rather small (16 individuals).