He's in a much stronger position than he looks like. The Democrats so relentlessly hammering him and catastrophizing everything he does means that if things don't actually turn out all that bad (if the economy stays strong and no wars break out), they'll look rather silly.
I actually agree with you, if he stops the nasty tweets. If he keeps them up he will lose as I said unless the Democrats nominate Hillary or go wacko left. The nasty tweets even get on my nerves. You can say the same things without being nasty.
Agreed. His personality is his biggest weakness - he can't help himself, and 90% of his wounds are self-inflicted.