Longman definition of 'break into'

**to start to spend money that you did not want to spend**

For example

1. I don't want to break into my savings unless I have to.
2. We had to break into our fixed deposits to pay for the hospital bill.

My questions is that 

We have different kinds of investments like shares, debetures, equities, gold etc.
So can we use the same logic with these investments to come up with sentences like the following -

1. We will have to break into all our shares / mutual funds / gold, if we want to buy a house.
2. I don't want to break into my shares to buy a car.
3. I don't want to break into my gold to buy a house.

These sentences sound a bit odd to me. What is the correct way to express if I want to return my gold or shares in case of emergency ?

Thanks