One of my developer wrote to me in chat,
please tell LK that you need your blinkers on and a case of Red Bull.
(Here LK is the name of my senior.)
What does "need blinkers on and a case of Red Bull" mean?
Blinkers are eye-shades for horses which allow them to see only straight ahead and prevent them from being distracted by events around them.
Red Bull is a proprietary energy drink.
Your developer is saying that you will need to be focused on the single goal without distractions, and will be working long hours.