This is an interesting thread. I find it eye opening (and a bit sad, actually) that some people assume happy people are "putting on a front"!
I feel genuinely very lucky in life. Even even I'm sad or bad things happen, I just feel so grateful for my family, my friends, and all the good things that surround me. I love my husband, my dogs, living in the countryside, the mental stimulation I get from my job. On a global scale, look how lucky we all are, to live where we live (in first world countries) and ìn the age we live in.
Although I work very long hours in a mentally (and sometimes physically) challenging job, and deal with the general public sometimes at their most emotional/angry, I try to let bad emotions wash over me to some extent, and try to see the best in a situation even when things go wrong. I don't blame myself for things I have no control over. A colleague of mine told me I'm resilient, which surprised me, as I don't feel like I've had my resilience tested particularly. When people are nasty or angry or horrible to me or to colleagues, i assume it's because they are an angry person with a negative mindset; aka I don't take it personally; and in fact, it makes me more grateful that I'm not like that!
I like to try to cheer up my colleagues when they're feeling down. Equally, I have times where I feel very stressed and emotional at work, (probably quite often!) and when I do, I don't hide it - I'm pretty useless at hiding how I feel!! - but I get over it fairly quickly and just keep going. I am always so glad of the help my colleagues give me in tough times, and try to reciprocate.
When the pandemic hit and my area first went into a tough lockdown, my automatic reaction was "this is proof of how lucky and how free we all are/I am in normal times"; it made me more grateful for the things and the freedoms we all usually have. I was surprised this wasn't the reaction of many others. Of course I'm sick of being locked down like everybody else, and get stressed and worry about where it's all going, but thankfully my family and friends are all OK, and if being restricted for a while is the worst thing that happens, we'll be lucky in the long run.
I stay reasonably well up on current affairs via the radio etc but I do try not to watch or read the news excessively as it's 95% bad news, which I don't think is good for anybody's mindset.
In my personal life, my husband and I try to always be kind to each other and put each other first. We're far from perfect and have our fights and difficulties like anybody, and are dealing with fertility issues at the moment, but we love each other, tend to get over tensions quickly, and try to always do little things to make each other feel appreciated all the time. We both wonder sometimes why other people are so mean to each other. I'm really lucky to have him and I often wonder how I got him!
I don't know how others perceive me, but I generally feel like a content and very, very lucky person.