near my breakdown point

Is suicidal tendency genetically inherited? Or is it something normal for a person to experience.
I have such inclination towards suicide since I was in secondary. Secondary was chaotic, I would the stereotype geek that gets bullied easily. At that point in time, everything seemed to have gone wrong, broken family, financial crisis, racial riots. I tend to prefer the easy way out, which is death. But why am I still alive? no chance probably. Is it a sign of depression and stress.

This suicidal thought persists even until today, it would come every now and then. It is so tempting to just jump from tall buildings or onto the train's track and end life. But I choose not to.

Been having problems at work, unreasonable demands from my supervisor, spoiled equipments, conferences. They keep piling up and most of the time, things are out of my control. For conference, typically, one would come out with an idea, and conduct the experiments then write a paper, but that doesn't work that way under my supervisor. If you have an idea, then you have to submit an abstract for a conference, eventhough you are uncertain whether it might work. If it's accepted, then you start doing experiments and pray that everything will go smoothly, which doesn't happen most of the time. At the end of the day, you have to use any available data and tweak it here and there. I am doing it now.... No credibility and professionalism.

I don't really enjoy my job, the only reason why I'm still staying is because I'm considered as the key person of this project that I'm doing. They would not have enough time to recruit someone new and finish the project on time. So, eventhough I may not like it, I have to persevere and complete the job.

It confuses me, Do I like the job but not the supervisor, or the other way around, or perhaps I don't like both. things are quite obscure at the moment, but one thing for sure, I dislike my supervisor.

back to the original question, Is suicidal tendency genetically inherited?