The beginning of Hardmode can feel overwhelming because several systems change at once. Start by restoring a stable progression loop.
Stabilize survivability first
Make sure routine exploration is manageable before pushing deep into new objectives.
Keep travel routes usable
Safe and recognizable routes reduce the cost of repeated recovery and gathering.
Organize new materials immediately
Do not let unfamiliar resources turn the base into clutter.
Choose one upgrade path at a time
Solve the biggest current weakness before spreading effort across every new possibility.