2005 Vauxhall Corsa Diesel:Won't Start, Headlamps keep break

2005 Corsa Utility 1.7dti

My car struggled to start in the mornings, summer or winter, but once it started and drove it started immediately during the rest of the day. But lately when the car stays stationary for an hour or so is struggles to start, any time of day or season.

The other problem is I keep blowing front headlamps, never at the same time but I keep replacing headlamps every 2 to 4 months plus lately when I start the car one headlamp will stay of until the car starts moving and then goes on. Another thing is the odo meter sometimes stays off until you give it a light tap then it goes on.

Please help.
Christopher Francis