Should i continue my marriage, i feel so crazy lately, what is my purpose in life?

Focusing on the negatives never does help you out, it only makes it worse.

go back to doing what you did when you met your partner, doing all the dating and courting and fun little things that made you attracted to this person

have sex several times a week.

and there is always the option of seeing a marriage counselor.

if you go at it, giving your best, and you still can't make it work, then maybe you two aren't really right for each other. but give it your best shot first

The first person you should talk to is your spouse, if he or she is willing to communicate. Tell them exactly how you feel. Definately talk to a minister or marriage counselor, by yourself, and with your spouse if he or she will go with you. It might be that you are experiencing depression, abuse, overwhelmed - whatever the case may be, do not walk out of the marriage until you are sure you have tried everything to make it work. If you're not happy with yourself, it will affect every one around you, so getting help to make yourself happy is the 1st step. Then you will be more inclined to make the right decision about your marriage. Good Luck to you.