"披荆斩棘地前进" can be translated into English as "forge ahead through thorns and brambles" or "advance bravely by overcoming obstacles".
Here are some variations depending on the context:
"Press on courageously, cutting through all obstacles" (emphasizes determination and courage).
"March forward resolutely, clearing a path through difficulties" (focuses on persistence and progress).
"Advance fearlessly, breaking through all barriers" (highlights bravery and overcoming challenges).
The most literal and concise translation is "forge ahead through thorns and brambles", which retains the imagery of overcoming physical or metaphorical obstacles.