Dreaming of a bulldozer means you are pushing towards your goals regardless of what stands in the way. The challenges at work will go away as you put your head down and grind. The tenuous relationships will become long lasting lifetime relationships as you continue to bring value to the table. Focus on pushing toward what is good for you while leaving everything that is irrelevant pushed to the side.
Seeing a bulldozer in a dream is a wake up call for you to push through when things get difficult. Reach forward and attain all your goals.