This is how Trump can claim a great victory

Democrats will now take over House committees and, crucially, gain the ability to subpoena whomever they wish. That could spell real trouble for Trump, his administration and even his business associates.

But it could have been much, much worse.

Democrats will likely gain about 35 seats in the House, though results are not yet final. That is squarely in line with historic norms for a president’s party in his first midterms.

In President Obama’s first midterms, in 2010, Democrats endured a disastrous night, losing 63 seats. In 1994, President Clinton saw his party lose 54 seats.

Just as importantly, Republicans exceeded expectations in the Senate, sweeping at least three Democrats out of the upper chamber.

  The Hill

Trump sees a mandate to double down on his hateful rhetoric and policies. And he's not wrong.

...but hey, do what you want...you will anyway.