On-growing list of some concepts, ideas, whatnot...
Mind
Human mind works in funny ways, often giving more attention to the negative stuff that the positive, or just focusing on things that are past or yet to happen, rather than letting you be in the present moment.
Productivity
Better set yourself mini-goals and achieve more than seeing to big and getting discouraged and frustrated.
There is often more than one road to reach your destination, they all come with blessings and curses.
A Jack of all trades is a master of one. What if you weren't a Jack?
Good stuff
Sleeping is sweeeet! (even better in clean sheets!)
Taking a hot shower feels nice
Feeling the sun on your skin is pretty cool
Listening the symphony of the wind in the leaves and the birds singing in summer, or the rainfall in autumn while you are dry inside a car or home
Being in love is a bit like all of the above condensed, and even far more...