> a) Tell your boss that you effectively suck and it will take you 4 weeks instead of 2? Assuming the company hired me because they had a gap to fill that I fi

> a) Tell your boss that you effectively suck and it will take you 4 weeks instead of 2? Assuming the company hired me because they had a gap to fill that I fit in and also that I delivered so far in reasonable velocity: if it's really so pressing yet unpredictable to deliver, I'd take the time to analyze the task and explain the boss what parts would take how long and why. If it's a good boss, he or she will either prioritize sub-tasks or talk to the other stakeholders and change requirements, i.e. adapt requirements to reality. If you work for a good boss/team/company, the effect afterwards will be that everybody will be more happy. Also on the long-term the project will be successful. So if making such a statement implies "you effectively suck", consider changing workplaces because this is unreasonable and even toxic. (Although even the most toxic places will give in if you have the patience and confidence to explain. If not, they'll definitely make sure to blame it on you.)