From now on I am absolutely serious about working starting t

From now on I am absolutely serious about working starting today.
首先,我写这句话别扭吗?
再用别的顺序或者词组表达这个意思.
要婉转一些的
From now on I am absolutely serious about working .
晕额
我的重点是,我想用婉转的话来表达...该怎么说更好呢