'wind behind my back'? you mean extra energy to finish this project? i don't know of one to complete a project, but you could look into herbs that give extra energy so you can stay up to finish it.
if you are 'facing numerous significant life obstacles' i would take a step back and evaluate your life. i don't know these obstacles, [and from your post it sounds like you're on thin ice at work] but ask yourself if it's all worht it. i'm not saying give up, but if you hate your job [for example] do your best on the project, but try finding new employment [which you can cast a spell for more work] or if you're in financial turmoil, you could cast a spell to help boost your savings, or if you're having housing issues, make a plan to find a better place and cast a spell to help you should you find one.
i feel when a bunch of bad things happen at once it's the universes/Gods way of forcing you out of your comfort zone. [sure there's ups and downs, but when a bunch of obstacles present themselves in a short period of time, it's probably a sign] you should evaluate your life, change what you want, remove what doesn't serve you, and focus on what you love about your life. good luck to you.