You don't have to do all of this stuff in perpetuity (although it will help if you do), but at least do it long enough that you can get your confidence back and be sure you're playing your best. If you're playing your best, there's nothing more you can do.

Also, tightening up in a downswing is natural, but it's not always right. Often playing your best means you're taking the thin edges and noticing the obscure spots you might otherwise miss, but when you're in a 'tightening up' mindset, you turn down these spots. Sometimes trying to reduce variance can end up reducing your ROI instead.

We all know the odds of roulette, when you walk through a casino it's not rare to see a screen showing red or black has hit 8-10 times in a row (the record is 32 reds in a row). Now think how much more likely it is for you to see a day of not cashing in your MTTs. As a professional you need to accept these days as just a blip in the bigger picture and have faith that your edge will show in your annual results. Obviously this is only possible is you are effectively rolled for the stakes you are playing and there is a very limited risk of ruin. 

Check through your HHs and look out for signs of excessive passivity or aggression through fear or frustration. Focus on increasing your edge anywhere you can and as another poster said reduce your table numbers to increase your chances of better play and regain some confidence. 

GL! 

.....hey-avoid/

When I'm on a downswing, I do more HH reviews to see where the issues might be.  Currently in one now, so I'm studying a lot more and know it will turn around soon.

GL.

One thing I always do on these downswings is adjust my range - tighten up a bit to minimize the variance. But lately even that doesn't work and I loose every hand left and right, even a few where I had 95% equity on the flop when we got it in.

Result is that I am morphing into scared money. Had a sunday where I played 35 MTTs, 0 cashes.

How do you mentally toughen yourself up during these times?