Happiness can come from noticing and embracing a wide spectrum of emotions--both good and bad. 

So don't ignore negative feelings. Embrace them--and then actively work toward overcoming whatever issues you face.

Intangible experiences, relationships, and communication have greater benefits than possessions, things and money.

Studies analyzing if we get more happiness for our buck by paying for therapy or by receiving cash in hand found that therapy is 32 times more effective than money.

Overworked and overburdened is a recipe for unhappiness. So if you want to be happy, get some quick wins by saying no.

But say no the right way: say "I don't." Using the phrase "I don't" is more effective than saying "I can't." 

Prepare for the worst; hope for the best.

There's actually a lot of peace of mind to be gained in thinking carefully and in detail and consciously about how badly things could go. You might actually find that your fears were exaggerated.

Just for a day or two, not forever.

It's about self-control and willpower:  Exerting self-control leads to more self-control over time. Plus, denying yourself something makes you appreciate the things you take for granted.

... and embrace weaknesses.

Celebrate what you're good at, and appreciate that we all bring unique characteristics to the table.