IFR Currency

I needed three approaches to extend my 6-month IFR currency so I booked some time with my regular CFII (who is also an Airbus FO). I planned for a couple of ILS's at KTIW and a GPS approach at KRNT. Overall the flight went well, but had a brain freeze on the first missed approach. The KTIW ILS-17 missed approach calls for a climbing right turn to intercept a radial from the SEA VOR. I read what was on the approach plate, but proceeded to follow the missed approach heading displayed in the GPS. The lesson learned here, is that when in doubt, fly the instructions that are printed on the approach chart. Now that I'm a CFI, my self critique is a lot more thorough and my instructor holds me to a much higher standard when flying approaches.