You may mark a Goal as complete and later realise that there is still more work to do, or you may have accidentally marked it as complete. Either way, to make the Goal active again;
Step 1 – Select the Goals Tab at the bottom of the screen. This will then show you your current active Goals.
Step 2 – Press the completed Tab at the top right of the screen to view any completed Goals that you have.
Step 3 – Click on the Goal you want to reactivate
Step 4 – Either un-tick the box or
Click on the Goal and then click to make it Active
The Goal will now move to the Active Tab.