Your attitude shows – even if you think it’s hidden.
Don’t deny it; own up to it.
Others are already aware of it – even if you never say anything.
And don’t feel bad if it’s not “happy-clappy” all the time. After all, we all have our down days. After all, someone with a “positive attitude” is simply someone whose attitude is positive more times than it’s not.
Check your attitude regularly. If it’s not serving you, do a reset.