I am still determined to be cheerful and happy, in whatever situation I may be, for I have also learned from experience that the greater part of our happiness or misery depends upon our dispositions, and not upon circumstances.
dis·po·si·tion
noun
1.
the predominant or prevailing tendency of one's spirits; natural mental and emotional outlook or mood; characteristic attitude: a girl with a pleasant disposition.
2.
state of mind regarding something; inclination: a disposition to gamble.
3.
physical inclination or tendency: the disposition of ice to melt when heated.
4.
arrangement or placing, as of troops or buildings.
5.
final settlement of a matter.