Please help me

[physics]

I have a contract job. Running a massive project. It's been under resourced from the start. It's delayed by a year. Now under pressure to deliver by June. I have a counterpart who runs the technical side. He has over promised and under delivered. The stakeholders are impossible. The vendors are impossible. I am broken. Stakeholders are lawyers so they just argue every point and it all gets very circular. In the beginning I thought I could fix it with process. I was wrong.

I have 2 beautiful kids who I am missing out on. I am single and lonely. I am losing my health.

I have good savings. Shall I just walk away? I am so scared they would bad mouth me and I lose my reputation and maybe they wouldn't give me a good reference.

I feel like I have failed so want to get it to some sort of fruition but there are so many factors beyond my control.

Please help. Should I just walk away?

That sounds awful. You seem broken. But what would be the implications of walking away?
Financial
Reputation
Confidence in your professional abilities

Is it possible to deliver in 10 weeks (ie by June)?

If you saw the project through, would it enable you to spend the summer with the kids while looking for the next role?

My head says to urge you to see it through, but only you know if the cost of doing so is too great.

Thanks. Yes I am broken. I think the cost of walking away is definitely financial, reputation yes but maybe not as much as I fear because I think a lot of the senior people know the overall infrastructure is broken.

May be able to deliver the parts I am responsible for in 10 weeks but it is going to be at a huge personal cost.

I think I need to tell the bosses I can give them until mid July and then I am gone.
Contract is until December. The money is not worth it.

Aww I really feel for you, but I know what I would do if I was in that situation. Contracts, reputation etc can be rebuilt given time, your health and family are far more important, look after what matters to you most, the rest will fall into place eventually. Best of luck with it all.