on wednesday feb 1 i had my first lucid dream

just please explain to me this... the dream started off as i was in third person view... i opened my eyes and looked at my clock... i think it said something like this 98 : 43 then i knew i was dreaming just then i looked at my blinds ( still dreaming ) and light shone through and i woke up

can some one please tell me why i woke up so easily?

Thanks