Make sure you have the skills you need for your camping or hiking adventure. You may need to know how to read a compass, erect a temporary shelter or give first aid. Practice your skills in advance. If your trip will be strenuous, get into good physical condition before setting out. If you plan to climb or travel to high altitudes, make plans for proper acclimatization to the altitude. It's safest to hike or camp with at least one companion.
If you'll be entering a remote area, your group should have a minimum of four people; this way, if one is hurt, another can stay with the victim while two go for help. If you'll be going into an area that is unfamiliar to you, take along someone who knows the area or at least speak with those who do before you set out.