It's possible that you take certain aspects of your life for granted. This could include anything from having a car, shelter, food to eat and many other aspects of your lifestyle that a majority of the people on this planet could only dream of.
The mindset in which you take nothing for granted will usually require no more than a shift in attitude. You won't have to change anything about your external circumstances.
To remind yourself to be appreciative, make it a point to reflect on everything that you’re thankful for once a day. Doing this as you fall asleep each night helps to brush your cares away as you fall into restful slumber, preparing the way for a great day tomorrow.