A C177 SINGLE PLT HAD A RWY INCURSION WHILE TAXIING AT EUG.

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AFTER RECEIVING CLRNC TO TAXI TO RWY 21 AT THE EUGENE ARPT; I MISTAKENLY FOLLOWED A TAXI LINE ACROSS THE HOLD SHORT LINE AT TXWY A6. AS SOON AS I REALIZED WHAT I HAD DONE; I STOPPED THE ACFT. GND CTL THEN INSTRUCTED ME TO DO A 180 DEG TURN AND TAXI BACK ACROSS THE HOLD SHORT LINE. GND CTL THEN GAVE ME DETAILED PROGRESSIVE TAXI INSTRUCTIONS FOR GETTING TO RWY 21. I BELIEVE THE PRIMARY FACTORS BEHIND THIS ERROR WERE: 1) GET THEREITIS -- I WAS ANXIOUS TO GET HOME. THAT CAUSED ME TO RUSH MY TAXI PREPARATIONS. I SHOULD HAVE TAKEN THE TIME TO RETRIEVE AND STUDY THE EUGENE ARPT DIAGRAM WHICH I HAD ON MY CLIPBOARD. THE CLIPBOARD WAS ON THE FLOOR BEHIND THE FRONT PAX SEAT. 2) FATIGUE -- I HAD FLOWN 6 HRS PRIOR TO THIS INCIDENT WITH ONLY 2 SHORT BREAKS FOR REFUELING AND QUICK SNACKS. I SHOULD HAVE TAKEN A LONGER BREAK AT EUGENE OR PERHAPS SPENT THE NIGHT THERE INSTEAD OF PRESSING ON. I SHOULD HAVE RECOGNIZED THE FEELING OF BEING RUSHED AS A WARNING SIGNAL AND NOT STARTED OUT. IN THE FUTURE; I WILL INCORPORATE THAT INTO MY PERSONAL CHKLIST FOR PLT FITNESS.