I owe taxes and the IRS has contacted me

 Are they going to force me to sell my stuff or worse still are they going to talk me about going to jail?

The IRS has no interest in taking your stuff. In fact, the IRS will only start to take stuff when all other methods of payment have failed and there has been a break down in the relationship between the taxpayer and the IRS representative.

You can look at a number of options to pay.  Terms of payment may extend for as long as 72 months.

The only people that end up in jail are those that are guilty of criminal tax fraud.  Simply owing taxes is not criminal tax fraud.