Replying to Over Estimating your own ability

So im curious if this happens with a lot of people or if I'm the only one who does this.
So sometime when in the park I'll think I can always do hard tricks that i can't always do. For example someone will say do a k fed and it will take me like 5 trys if the feature is hard. I'm starting to realize a lot of people I ski with will claim there best trick but it seems like skill wise they can't do it often.......a lot of the time I usually over estimate my self on rails like im skilled but I'll get on the rail and right after I do the first swap or spin on I'll usually try for more harder tricks that I rarely land. Anyone else over estimate them selfs when skiing? Or anyone inconstant when doing tricks. An example of over estimation I was trying back 4s on before I could front four off last year.