Higdon took his personal tally for the season against Inverness to six goals with a simple tap-in and a wonderful left-footed volley as Motherwell secured an ultimately convincing 3-0 win.
Motherwell can move five points clear in second on Tuesday if they beat Dundee United at home, and Higdon intends to keep the impressive home form going after they made it 13 points and 15 goals from five games at Fir Park.
The former St Mirren forward said: "We're in a good position and have a couple of games in hand on the teams around us.
"It's good we have a game coming up on Tuesday because we would rather play than train, especially when we are on winning form.
"We want to carry on the way we are going. We just want to go out and express ourselves, and I thought we did that with some outstanding performances."
Higdon opened the scoring on Saturday after an entertaining first half hour when he was on hand to convert Henrik Ojamaa's mis-hit shot, and Motherwell built on their lead in the opening stages of the second half.
Nicky Law burst into the box and converted after some good skill, before Higdon's first-time strike from 18 yards put the game beyond Caley Thistle in the 56th minute.