A Longford man has been given a chance to change his life and avoid serving a 10-month jail sentence by taking part in the court-mandated drug diversion program.

Ethan Daniel Baker previously pleaded guilty to 34 charges in the Launceston Magistrates Court, which included an evade police, several firearm-related offences, drug possession, motor vehicle stealing and driving offences.

Baker, 26, was the driver of a Mazda hatchback that crashed on the Bass Highway at Travellers Rest about 4.40am on December 20.

Police found a loaded 12-gauge shortened shotgun, ice, marijuana, two glass pipes and ammunition in the car.

In March, Baker grabbed his ex-partner on the driveway of her mother's Longford house and pulled the woman's arm and neck, causing her to fall and graze her ribs.

He drove unlicenced to the house where he'd previously lived, beeped the horn and text the woman to come out the front.

Baker assaulted her after she refused to get in his car.

The court previously heard Baker's adult life had been marred by drug addiction, but he wanted to make changes.

He was successfully assessed for the drug diversion program and an order was made on Thursday, with Magistrate Sharon Cure telling Baker she wanted to see him graduate in 12 months.

"You've got 10 months' [jail] hanging over your head," Ms Cure said.

Baker had served five months when he was released on bail on September 20, with Ms Cure saying she took that time into account but his new sentence would be cumulative to it.

Ms Cure said he'd made a really good start to the program in the past week.

The drug treatment program comes with a long list of conditions, with Baker's including undergoing treatment, reporting to and accepting visits from a court officer, attending programs, avoiding drugs and alcohol, curfew and attending counselling. Repeated failure to comply with the program can activate the jail sentence.