Just think about what you need to do and program accordingly...

Rule 1. Increment a variable 1-10 if a Button is pressed.
Rule 2. This variable loops back to 1 if value 10 is exceeded.
Rule 3. Timeout and exit if Button has not been pressed for 5 Seconds.

Code:
	MyButton var PortB.0 	' Pin goes LOW when Button pressed

	MyNumber var Byte	' Variable 1-10
	MyTimeOut var Byte	' 5 second Timeout (100 loops of 50mS)

	MyNumber=1		' Power-On with this starting value
	MyTimeOut=0		' TimeOut starts from zero at Power-Up	

	While MyTimeOut<100
		If MyButton=0 then
			MyNumber=MyNumber+1
			If MyNumber>10 then MyNumber=1
			MyTimeOut=0
			Pause 50	
				' This Pause DEBOUNCES Button - do not remove it
			While MyButton=0:Wend
				' Wait here if Button held down
			else
			MyTimeOut=MyTimeOut+1
			Pause 50
				' This Pause is the Timeout Pause
			endif
		Wend