It's not just you! Everything at the moment is "no" - we have to give lots of warning if we are about to do something (eg leave the park), give choices (for clothes/dinner) and also try to frame things positively like OP. It is a constant struggle!
Yep, we do what Nai does.

Also, get your hands on a copy of 'What every parent needs to know' by Margot Sunderland. REALLY FABULOUS book and will not only give you lots of ideas but explain WHY your 2 yo acts this way which is really helpful and makes you feel better about it anyway.