for true... ya might wanna talk to a professional. someone who can help ya take the final few steps from healed to active in life again?
ya seem to have some depression hanging about ya bones, Mr. Hung. the discounting of any possibility of approach working... how ya didn't send the attractive lady a drink. ya personal ads , least the recently added line, reads all resignation and frustration. *take out that line* that to me sounds like some deep hurt ya got.. not just grieving for ya wife, but the life you lost with her. how at an age when you assumed there would be some security/assurance in ha life.. ya lonely, and starting over. *keep in mind i am a little nuts, so i could be so off on my interpretation*
Mr. Ellie's and Ms. Helag's advice about support groups, churches and such are great ideas. those soul deep wounds in life kinda place a person in a bubble, either folks are afraid to touch or the person is afraid to/unsure how to reach out. the kinship of folks in similar situations can be comforting. from the comfort, that ease.. where you don't have to feel like you're avoiding some huge looming topic/feeling can be the safety zone to reconnect.
if the widow/widower groups aren't the space you need, try single parents. ya are raising a 10 year old daughter.. if nothing else having a female to bounce 'daughter drama' off of might be helpful in the next few years.
gym/fitness/health kick. the exercise will do you good.. outside exercise even better. vitamin D is the bomb! meeting people will be good for ya insides. with spring springing and summer on the way.. heaps of outdoor yoga *fripping love yoga in the park* beginner running/jogging clubs, biking, hiking, even lazy folks strolling around local attractions.
photography club, book clubs, cooking classes... even you don't meet a lady friend ya have brought something fresh/new/invigorating into ya life. a renewal of you. sometimes a change in settings/routine will equal a change in you other folks will notice. like opening the windows.. letting all the winter air get wooshed out.
meh.. long fricking post. sorry. is a big thang to tackle.. i offer ya hugs from across the intorwebz. with all the peace, renewed hope and snuggle a real hug has.