Here's a method that's exceptionally likely to both boost our overall level of wellbeing and move us towards the goals we feel our most important in our lives.  It will take a bit of effort and commitment - so don't fall into the trap highlighted by Thomas Edison's comment: "Opportunity is missed by most people because it is dressed in overalls and looks like work."

Here are half a dozen studies on diet (see below for all abstracts and links).  The first three are about the benefits of healthy lifestyle.  Trichopoulou & colleagues evaluated the contribution of nine widely accepted components of the Mediterranean diet (high intake of vegetables, fruits and nuts, legumes, fish, and cereals; low intake of meat and dairy; high ratio of monounsaturated to saturated lipids; and moderate intake of ethanol) in the inverse association of this diet with all cause mortality.  They concluded that "The dominant components of the Mediterranean diet score as a predictor of lower mortality are moderate consumption of ethanol, low consumption of meat and meat products, and high consumption of vegetables, fruits and nuts, olive oil, and legumes.

Here are three studies (for all abstracts & links see below) highlighting the increasingly encouraging results being reported for internet-delivered psychological interventions.  Van't Hof, Cuijpers et al report on " ... a systematic review of meta-analyses on the efficacy of self-help interventions, including internet-guided therapy, for depression and anxiety disorders". They conclude that the 13 meta-analyses indicate "self-help methods are effective in a range of different disorders, including depression and anxiety disorders. Most meta-analyses found relatively large effect sizes for self-help treatments, independent of the type of self-help, and comparable to effect sizes for face-to-face treatments" (see below for abstracts and links to the six research papers mentioned).  Riper, Kramer et al describe how an experimental internet-delivered self-help alcohol reduction intervention transferred well to being made more generally available.  The authors conclude that " ...