rectifier the line voltages
filter them using high voltage polar capacitor.
make a high frequency oscillator (in cfl self start oscillator by feed back winging is used).
amplify this using high voltage transistor like 13001,13002,13003 or 13009.
give these voltage to the chock and convert these into high voltage.
pass these voltage through high voltage capacitor like 1kv or 1.5kv.
then pass this energy ( high voltage and high frequency) through cfl lamp.
your lamp is working now.