Out of Sequence

I envy those people that can write large sections of their novels out of sequence. Because I seem to be unable to do the same! Outlining- no problem at all. Mapping it all out- totally fine. Actually writing it? My mind literally goes blank unless I return to the chronological point at which I left off.Considering that my characters are nowhere near the continent they need to be on for all of their real adventures to start yet (and one of their love interests!!), it's really very frustrating. I hope to get my MCs out of the States and onto a plane very, very, soon. Or I'll be the one going stir-crazy instead of them!