Naming your variables properly

Always use meaningful names to store your variables. If you don't do that, 6 months down the line, you will be sad. I'm going to exaggerate here a bit to make a point. I will name a variable as shown in this code:

public bool areRoadConditionsPerfect = true;

That's a descriptive name. In other words, you know what it means by just reading the variable. So 10 years from now, when you look at that name, you'll know exactly what it means. Now suppose that instead of areRoadConditionsPerfect, I had named this variable as shown in the following code:

public bool perfect = true;

Sure, you know what perfect is, but would you know that it refers to perfect road conditions? I know that right now you'll understand it because you just wrote it, but 6 months down the line, after writing hundreds of other scripts for all sorts of different projects, you'll look at this word and wonder what you meant. You'll have to read several lines of code you wrote to try to figure it out...