Navigation is all about cockpit management.
If you've done your planning well, then the heading and times you have should work out, all you have to do is fly them. Have faith in your planning.
Get your kneeboard, plog and stopwatch, and think of the best way to have them to hand for yourself. You can do this at home. You need to be really familiar with the plog you are using so you spend as little time as possible with your head in the cockpit. I bought a basic clipboard and put all the info I need on it, including some velco to hold the pens on.
Then, a nav leg becomes all about looking out of the aircraft. If you pick a nav point ahead, and the time to be there, you can incorporate looking for it into a scanning lookout which you should have anyway when flying VFR.
As long as you hold you heading and speed, you should only ever have to make one track correction (using whichever method you have been taught) and then you know exactly when you'll be at your destination. At least 2 mins before, you need to be looking ahead for it. If you wait until time is up then start looking for it, you'll never see it, it will be directly below you.