When we are having a tough day, finding the positive side of everyday happenings can be difficult. It is an even greater struggle for people suffering from depression. But by developing skills to tune into the positive, depressed people can strengthen their overall wellbeing and mental health, a 2009 Ohio State University study 
found. By staying mindful of the positive elements of daily events, or by documenting each days happiest moments in a journal, a person may lower their stress levels. “Positive emotions build resilience to stress, in addition to having an undoing effect on depression” says Alan Keck, Psychologist at the Centre for Positive Psychology.
He goes on to say that we should consciously build up our positive resilience by really focusing when we are having an experience that we find especially pleasant. This may simply be a good cup of coffee, a special brunch, a visit to friends, a nice meal. To magnify the results, he says, pay attention to what you see, hear, and feel, both physically and emotionally, and smile. Then consciously tell yourself to “remember this” experience for which you feel grateful. Doing this helps the mind store the positive effects of the moment for future use.
Mindfulbalance 
I have been keeping a gratitude journal since March of this year. And this small daily routine just before going to sleep has created significant shifts in my wellbeing and coping capacity. First of all, logging all the day’s positive moments just before going to sleep has hugely improved my sleep. By focusing the mind on positive and heart-warming thoughts, you tend to fall asleep quicker, sleep through and wake up with a smile. Secondly, and as your blog entry mentions, the reflection and awareness has a big effect on all of our perceptions. I now tend to be much more on the “look-out” for things/moments I am grateful for and by becoming more aware of them, I also naturally attract more of such moments. Thirdly, my mood has improved hugely. Not even on the most difficult days do I fail to recognize 4 things to be grateful for. There is always something and it can be as simple as the recent encounter that made my day: an old man with crutches waiting to cross the street, a car stopping to let him go and the man smiling from ear to ear struggling but almost jumping across the street so pleased to be let go and trying to hurry over the other side of the road so the driver wouldn’t have to wait to long. It’s the simple moments in life, the moments in which we feel nothing has to be changed, that at times make our lives so rewarding. And keeping a gratitude journal has made me notice moments that previously would have passed me by completely… It’s almost like charging my batteries with positivity so on difficult days I can remember what really matters and ‘untap’ my underlying comfort and strength.