Explain Walters attitude about his job. As a result ,what does Walter try to do?

After Walter's boss calls looking for him (he hasn't shown up for a few days), Mama inquires where Walter has been, he confesses that on the first day he borrowed his friend Willy's car and drove into the country to look at steel mills, and then went to a local bar, the Green Hat. On the second day, he drove the car all the way up to Wisconsin to look at the farms, ending the day again at the Green Hat. Today, he says, he walked all over the South Side of Chicago, and plans to go right back to the Green Hat.

Mama realizes that her son is in a crisis and makes an important decision. She says, BLOCKQUOTE [There ain't nothing as precious to me...There ain't nothing worth holding on to, money dreams nothing else-if it means-if it means it's going to destroy my boy...I'm telling you to be the head of this family from now on like you suppose to be.] Lena then gives Walter the rest of the insurance money to invest as he pleases. After giving him $3,500 as a down payment, Mama gives the remaining $6,500 to Walter, asking only that he put aside $3000 for Beneatha's medical school education. Walter is amazed that his mother trusts him with the money.